/* ===== CSS Custom Properties (Ocean Theme – Light & Professional) ===== */
:root {
    --deep-ocean: #1c3d5a;
    --ocean-dark: #275270;
    --ocean-mid: #2e7ea8;
    --ocean-blue: #3b96be;
    --ocean-light: #62b5d4;
    --ocean-surface: #92d0e5;
    --seafoam: #cbe9f3;
    --foam-white: #f2f8fb;
    --sand: #f9f6f1;
    --pearl: #ffffff;
    --accent: #4272b8;
    --accent-soft: #5e90cc;
    --text-primary: #2a4a63;
    --text-secondary: #5a7f99;
    --text-light: #90b0c4;

    --font-heading: 'DM Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-body: 'DM Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-display: 'Avenir', 'Avenir Next', 'Helvetica Neue', sans-serif;

    --shadow-sm: 0 2px 8px rgba(28, 61, 90, 0.06);
    --shadow-md: 0 4px 20px rgba(28, 61, 90, 0.09);
    --shadow-lg: 0 8px 40px rgba(28, 61, 90, 0.12);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background: var(--pearl);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ===== Layout ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: var(--shadow-sm);
}

.navbar.scrolled .nav-logo {
    color: var(--ocean-dark);
}

.navbar.scrolled .nav-link {
    color: var(--text-secondary);
}

.navbar.scrolled .nav-link:hover {
    color: var(--ocean-blue);
    background: var(--foam-white);
}

.navbar.scrolled .nav-link.active {
    color: var(--ocean-blue);
    background: var(--foam-white);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 300;
    color: var(--pearl);
    letter-spacing: 0.02em;
    transition: var(--transition);
}

.nav-logo img {
    height: 48px;
    width: auto;
    transition: var(--transition);
}

.navbar:not(.scrolled) .nav-logo img {
    filter: brightness(0) invert(1);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    padding: 8px 20px;
    border-radius: var(--radius-xl);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--pearl);
    background: rgba(255, 255, 255, 0.12);
}

.nav-link.active {
    color: var(--pearl);
    background: rgba(255, 255, 255, 0.18);
}

/* LinkedIn nav icon */
.nav-linkedin {
    padding: 8px 10px !important;
    display: flex;
    align-items: center;
}

.nav-linkedin svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--pearl);
    transition: var(--transition);
    border-radius: 2px;
}

.navbar.scrolled .nav-toggle span {
    background: var(--ocean-dark);
}

/* ===== Hero Section (Home only) ===== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background:
        linear-gradient(
            180deg,
            rgba(28, 61, 90, 0.32) 0%,
            rgba(39, 82, 112, 0.25) 40%,
            rgba(46, 126, 168, 0.16) 75%,
            rgba(59, 150, 190, 0.10) 100%
        ),
        url('ocean-2.jpg') center center / cover no-repeat;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 24px;
}

.hero-subtitle {
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--deep-ocean);
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 300;
    color: var(--pearl);
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.hero-title,
.hero-subtitle,
.hero-description {
    text-shadow: 0 1px 8px rgba(28, 61, 90, 0.35);
}

.hero-subtitle {
    text-shadow: 0 1px 4px rgba(255, 255, 255, 0.4);
}

.highlight {
    background: linear-gradient(135deg, var(--accent), var(--accent-soft));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 400;
}

.hero-description {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.78);
    max-width: 580px;
    margin: 0 auto 40px;
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.8s;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-xl);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.02em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-soft));
    color: var(--pearl);
    box-shadow: 0 4px 20px rgba(66, 114, 184, 0.30);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(66, 114, 184, 0.40);
}

.btn-outline {
    background: transparent;
    color: var(--pearl);
    border: 2px solid rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.55);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== Page Banner (inner pages) ===== */
.page-banner {
    height: 42vh;
    min-height: 280px;
    display: flex;
    align-items: flex-end;
    padding-bottom: 52px;
    background:
        linear-gradient(
            180deg,
            rgba(28, 61, 90, 0.55) 0%,
            rgba(39, 82, 112, 0.45) 100%
        ),
        url('ocean-2.jpg') center center / cover no-repeat;
}

.page-banner-content {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
}

.page-banner-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--pearl);
    letter-spacing: 0.01em;
    margin-top: 12px;
}

/* ===== Section Tag ===== */
.section-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ocean-surface);
    background: rgba(255, 255, 255, 0.15);
    padding: 5px 14px;
    border-radius: var(--radius-xl);
    backdrop-filter: blur(4px);
}

/* ===== Page Section (inner pages) ===== */
.page-section {
    padding: 72px 0 80px;
}

/* ===== About Section ===== */
.about-section {
    background: var(--pearl);
    padding-bottom: 24px;
}

.skills-section {
    padding-top: 40px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 64px;
    align-items: start;
}

.about-image {
    position: relative;
}

.about-photo {
    aspect-ratio: 3/4;
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.about-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.85) brightness(1.02);
    mix-blend-mode: normal;
}

.about-photo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(28, 61, 90, 0.08) 0%,
        rgba(46, 126, 168, 0.05) 100%
    );
    pointer-events: none;
}

.image-placeholder {
    aspect-ratio: 3/4;
    background: linear-gradient(135deg, var(--ocean-mid), var(--ocean-blue));
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    overflow: hidden;
}

.image-placeholder svg {
    width: 120px;
    height: 120px;
    margin-bottom: 12px;
}

.image-decoration {
    position: absolute;
    bottom: -16px;
    right: -16px;
    width: 120px;
    height: 120px;
    border: 3px solid var(--ocean-light);
    border-radius: var(--radius-lg);
    opacity: 0.3;
    z-index: -1;
}

.about-content h3 {
    font-family: var(--font-heading);
    font-size: 1.7rem;
    color: var(--ocean-dark);
    margin-bottom: 16px;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1rem;
}

.about-content .quote-text {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--ocean-mid);
    border-left: 3px solid var(--ocean-light);
    padding-left: 20px;
    margin: 24px 0;
    line-height: 1.7;
}

/* Education Timeline */
.education-section {
    background: var(--foam-white);
}

.section-heading {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--ocean-dark);
    text-align: center;
    margin-bottom: 12px;
}

.section-subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 48px;
    font-size: 1.05rem;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.education-card {
    background: var(--pearl);
    padding: 28px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--ocean-light);
    transition: var(--transition);
}

.education-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.education-year {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.education-card h4 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--ocean-dark);
    margin-bottom: 6px;
}

.education-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Skills Section */
.skills-section {
    background: var(--pearl);
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 32px;
}

.skill-card {
    background: var(--foam-white);
    padding: 24px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 1px solid transparent;
}

.skill-card:hover {
    background: var(--pearl);
    border-color: var(--seafoam);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.skill-icon {
    width: 40px;
    height: 40px;
    color: var(--ocean-blue);
    margin-bottom: 12px;
}

.skill-icon svg {
    width: 100%;
    height: 100%;
}

.skill-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ocean-dark);
    margin-bottom: 8px;
}

.skill-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 0;
    line-height: 1.5;
}

/* Skills Categories (About page) */
.skills-group {
    margin-bottom: 56px;
}

.skills-group:last-child {
    margin-bottom: 0;
}

.skills-group-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--seafoam);
}

.skills-group-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.skills-group-icon svg {
    width: 22px;
    height: 22px;
    color: var(--pearl);
}

.skills-group-header h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

/* Soft Skills group - warm teal */
.skills-group--soft .skills-group-icon {
    background: linear-gradient(135deg, #3a9bb5, #5abfcf);
}
.skills-group--soft .skills-group-header {
    border-bottom-color: rgba(58, 155, 181, 0.2);
}
.skills-group--soft .skills-group-header h3 {
    color: #2d8299;
}
.skills-group--soft .skills-category {
    background: linear-gradient(135deg, rgba(58, 155, 181, 0.04), rgba(90, 191, 207, 0.06));
    border: 1px solid rgba(58, 155, 181, 0.1);
}
.skills-group--soft .skill-tag {
    border-color: rgba(58, 155, 181, 0.18);
}
.skills-group--soft .skill-tag:hover {
    background: #3a9bb5;
    color: var(--pearl);
    border-color: #3a9bb5;
}

/* Technical Skills group - professional blue */
.skills-group--technical .skills-group-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-soft));
}
.skills-group--technical .skills-group-header {
    border-bottom-color: rgba(66, 114, 184, 0.2);
}
.skills-group--technical .skills-group-header h3 {
    color: var(--accent);
}
.skills-group--technical .skills-category {
    background: linear-gradient(135deg, rgba(66, 114, 184, 0.04), rgba(94, 144, 204, 0.06));
    border: 1px solid rgba(66, 114, 184, 0.1);
}
.skills-group--technical .skill-tag {
    border-color: rgba(66, 114, 184, 0.18);
}
.skills-group--technical .skill-tag:hover {
    background: var(--accent);
    color: var(--pearl);
    border-color: var(--accent);
}

/* Scientific Skills group - deep ocean */
.skills-group--scientific .skills-group-icon {
    background: linear-gradient(135deg, var(--ocean-dark), var(--ocean-mid));
}
.skills-group--scientific .skills-group-header {
    border-bottom-color: rgba(39, 82, 112, 0.2);
}
.skills-group--scientific .skills-group-header h3 {
    color: var(--ocean-dark);
}
.skills-group--scientific .skills-category {
    background: linear-gradient(135deg, rgba(39, 82, 112, 0.04), rgba(46, 126, 168, 0.06));
    border: 1px solid rgba(39, 82, 112, 0.1);
}
.skills-group--scientific .skill-tag {
    border-color: rgba(39, 82, 112, 0.18);
}
.skills-group--scientific .skill-tag:hover {
    background: var(--ocean-dark);
    color: var(--pearl);
    border-color: var(--ocean-dark);
}

.skills-categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.skills-category {
    background: var(--foam-white);
    padding: 28px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.skills-category:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.skills-category h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--ocean-dark);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.skills-category h4 svg {
    width: 22px;
    height: 22px;
    color: var(--ocean-blue);
    flex-shrink: 0;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--pearl);
    padding: 6px 14px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--seafoam);
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--ocean-blue);
    color: var(--pearl);
    border-color: var(--ocean-blue);
}

/* ===== Services Section ===== */
.services-section {
    background: var(--pearl);
    padding-top: 28px;
}

.services-intro {
    max-width: 700px;
    margin: 0 auto 56px;
    text-align: center;
}

.services-intro p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.service-card {
    background: var(--foam-white);
    padding: 40px 32px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 1px solid transparent;
}

.service-card:hover {
    background: var(--pearl);
    border-color: var(--seafoam);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.service-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--ocean-blue), var(--ocean-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pearl);
    margin-bottom: 20px;
}

.service-icon svg {
    width: 26px;
    height: 26px;
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--ocean-dark);
    margin-bottom: 12px;
}

.service-card ul {
    list-style: none;
    padding: 0;
}

.service-card ul li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.service-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--ocean-light);
}

.service-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Services CTA */
.services-cta {
    text-align: center;
    margin-top: 56px;
}

.services-cta p {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--ocean-dark);
    margin-bottom: 20px;
}

/* ===== Portfolio Section ===== */
.portfolio-section {
    background: var(--foam-white);
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--pearl);
    border: 1px solid transparent;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    color: var(--ocean-blue);
    border-color: var(--ocean-light);
}

.filter-btn.active {
    background: var(--ocean-blue);
    color: var(--pearl);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.portfolio-card {
    background: var(--pearl);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.portfolio-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.card-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.card-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--ocean-dark), var(--ocean-mid));
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-image-placeholder svg {
    width: 48px;
    height: 48px;
    color: rgba(255, 255, 255, 0.3);
}

.card-overlay {
    position: absolute;
    top: 12px;
    left: 12px;
}

.card-tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--pearl);
    background: rgba(28, 61, 90, 0.6);
    backdrop-filter: blur(8px);
    padding: 4px 12px;
    border-radius: var(--radius-xl);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.card-content {
    padding: 24px;
}

.card-content h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--ocean-dark);
    margin-bottom: 8px;
}

.card-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.card-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ocean-blue);
    transition: var(--transition);
}

.card-link:hover {
    color: var(--accent);
}

/* Publications Section */
.publications-section {
    background: var(--pearl);
    border-top: 1px solid var(--seafoam);
}

.publications-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.publication-item {
    padding: 20px 24px;
    background: var(--foam-white);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--ocean-light);
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    transition: var(--transition);
}

.publication-item:hover {
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.publication-item .pub-title {
    font-weight: 600;
    color: var(--ocean-dark);
}

.publication-item .pub-journal {
    color: var(--text-light);
}

/* Project logo in card */
.card-image-placeholder--logo {
    background: linear-gradient(135deg, var(--ocean-dark), var(--ocean-mid));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.project-logo {
    max-width: 70%;
    max-height: 70%;
    object-fit: contain;
    filter: invert(1) grayscale(1) brightness(2.5);
    mix-blend-mode: screen;
    opacity: 0.88;
}

/* Card photo (real image) */
.card-image--photo {
    position: relative;
}

.card-image--photo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(28, 61, 90, 0.3), rgba(20, 50, 80, 0.12));
    pointer-events: none;
}

.card-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.9) saturate(0.85);
    display: block;
}

/* Emoji card icons */
.card-emoji {
    font-size: 3rem;
    line-height: 1;
}

/* Articles photo grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 900px;
    margin: 32px auto 0;
}

.article-thumb {
    display: block;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--seafoam);
}

.article-thumb:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--ocean-light);
}

.article-thumb img {
    width: 100%;
    height: auto;
    display: block;
}

/* YouTube thumbnails */
.youtube-thumbnails {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 16px;
}

.youtube-thumb {
    display: block;
    position: relative;
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
}

.youtube-thumb:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-sm);
}

.youtube-thumb img {
    width: 100%;
    height: auto;
    display: block;
}

.youtube-play {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.85);
    background: rgba(0, 0, 0, 0.25);
    transition: var(--transition);
}

.youtube-thumb:hover .youtube-play {
    background: rgba(255, 0, 0, 0.55);
}

.orcid-link {
    text-align: center;
    margin-top: 16px;
}

.orcid-link a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--ocean-blue);
    transition: var(--transition);
}

.orcid-link a:hover {
    color: var(--accent);
}

/* ===== Contact Section ===== */
.contact-section {
    background: var(--pearl);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--ocean-dark);
    margin-bottom: 16px;
    line-height: 1.3;
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 1.05rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: var(--foam-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ocean-blue);
}

.contact-icon svg {
    width: 22px;
    height: 22px;
}

.contact-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 2px;
}

.contact-item a {
    color: var(--ocean-blue);
    font-weight: 500;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--accent);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--foam-white);
    color: var(--ocean-blue);
    transition: var(--transition);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.social-link:hover {
    background: var(--ocean-blue);
    color: var(--pearl);
    transform: translateY(-2px);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--foam-white);
    padding: 40px;
    border-radius: var(--radius-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    background: var(--pearl);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    outline: none;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--ocean-light);
    box-shadow: 0 0 0 4px rgba(98, 181, 212, 0.1);
}

.form-group label {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--text-light);
    pointer-events: none;
    transition: var(--transition);
}

.form-group textarea ~ label {
    top: 20px;
    transform: none;
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: -10px;
    left: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--ocean-blue);
    background: var(--foam-white);
    padding: 0 8px;
    transform: none;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== Footer ===== */
.footer {
    background: var(--deep-ocean);
    color: rgba(255, 255, 255, 0.6);
    padding: 48px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 24px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--pearl);
    font-weight: 300;
}

.footer-logo img {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    margin-top: 2px;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 28px;
}

.footer-links a {
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--ocean-surface);
}

.footer-bottom {
    text-align: center;
    font-size: 0.8rem;
}

/* ===== Portfolio Card Expandable ===== */
.card-content .card-details {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.3s ease;
    opacity: 0;
}

.card-content .card-details.open {
    max-height: 400px;
    opacity: 1;
}

.card-details ul {
    list-style: none;
    padding: 0;
    margin: 0 0 12px;
}

.card-details ul li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 4px 0 4px 18px;
    position: relative;
}

.card-details ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--ocean-light);
}

.card-details .card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.card-meta-tag {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--ocean-blue);
    background: var(--foam-white);
    padding: 3px 10px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--seafoam);
}

.card-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--ocean-blue);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 0;
    transition: var(--transition);
    font-family: var(--font-body);
}

.card-toggle:hover {
    color: var(--accent);
}

.card-toggle svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.card-toggle.open svg {
    transform: rotate(180deg);
}

/* ===== Home Page Sections ===== */
.home-section {
    padding: 80px 0;
}

.home-section--alt {
    background: var(--foam-white);
}

.home-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.home-intro--with-photo {
    grid-template-columns: auto 1fr 1fr;
    gap: 48px;
}

.home-intro-photo {
    display: flex;
    align-items: center;
    justify-content: center;
}

.home-intro-photo-wrapper {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--seafoam);
    box-shadow: var(--shadow-md);
    flex-shrink: 0;
}

.home-intro-photo-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.85) brightness(1.02);
}

.home-intro-content h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--ocean-dark);
    margin-bottom: 16px;
    line-height: 1.3;
}

.home-intro-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.home-intro-content .btn {
    margin-top: 8px;
}

.home-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.home-stat {
    text-align: center;
    padding: 28px 20px;
    background: var(--pearl);
    border-radius: var(--radius-md);
    border: 1px solid var(--seafoam);
    transition: var(--transition);
}

.home-stat:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.home-stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.2;
    margin-bottom: 6px;
}

.home-stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.home-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.home-highlight-card {
    text-align: center;
    padding: 40px 28px;
    background: var(--pearl);
    border-radius: var(--radius-md);
    transition: var(--transition);
    border: 1px solid transparent;
}

.home-highlight-card:hover {
    border-color: var(--seafoam);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.home-highlight-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--ocean-blue), var(--ocean-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pearl);
}

.home-highlight-icon svg {
    width: 28px;
    height: 28px;
}

.home-highlight-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--ocean-dark);
    margin-bottom: 10px;
}

.home-highlight-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.home-cta-section {
    text-align: center;
    padding: 72px 0;
    background: linear-gradient(135deg, var(--deep-ocean), var(--ocean-dark));
    color: var(--pearl);
}

.home-cta-section h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.home-cta-section p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

.home-cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-white {
    background: var(--pearl);
    color: var(--ocean-dark);
    font-weight: 600;
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(0, 0, 0, 0.2);
}

.btn-outline-light {
    background: transparent;
    color: var(--pearl);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* ===== Photo Carousel ===== */
.about-carousel {
    position: relative;
    cursor: pointer;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--seafoam);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.carousel-dot.active {
    background: var(--ocean-blue);
    transform: scale(1.3);
}

/* ===== Inline Education ===== */
.education-inline {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--seafoam);
}

.education-inline h4 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.education-compact {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.edu-featured {
    margin-bottom: 12px;
}

.edu-item--featured {
    border-left-color: var(--accent) !important;
    background: linear-gradient(135deg, var(--foam-white), rgba(66, 114, 184, 0.06)) !important;
}

.education-grid-2col {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.edu-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 14px;
    background: var(--foam-white);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--ocean-light);
    font-size: 0.88rem;
    transition: var(--transition);
}

.edu-item:hover {
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.edu-year {
    font-weight: 600;
    color: var(--accent);
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    white-space: nowrap;
    min-width: 36px;
}

.edu-title {
    color: var(--ocean-dark);
    font-weight: 500;
}

.edu-school {
    color: var(--text-light);
    font-size: 0.82rem;
}

/* ===== CTA Bridge ===== */
.cta-bridge {
    text-align: center;
    padding: 40px 0;
    background: var(--foam-white);
}

.cta-bridge a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--ocean-blue);
    transition: var(--transition);
    padding: 14px 32px;
    border-radius: var(--radius-xl);
    background: var(--pearl);
    border: 1px solid var(--seafoam);
}

.cta-bridge a:hover {
    color: var(--accent);
    border-color: var(--accent-soft);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.cta-bridge--compact {
    padding: 24px 0 0;
    background: transparent;
}

/* CTA below photos in about-image column */
.about-image-cta {
    margin-top: 28px;
    display: flex;
    justify-content: center;
}

/* About page: CTA left of education */
.about-cta-left {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 8px;
}

.cta-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--ocean-blue);
    transition: var(--transition);
    padding: 14px 32px;
    border-radius: var(--radius-xl);
    background: var(--pearl);
    border: 1px solid var(--seafoam);
}

.cta-link:hover {
    color: var(--accent);
    border-color: var(--accent-soft);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* Education inline (inside about-content, after quote) */
.about-content .education-inline {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--seafoam);
}

.about-content .education-inline h4 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.about-content .cta-link {
    margin-top: 24px;
}

/* ===== Skills with Photo ===== */
.skills-categories--with-photo {
    grid-template-columns: repeat(2, 1fr);
}

.skills-photo {
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    min-height: 200px;
}

.skills-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.85) brightness(1.02);
}

.skills-photo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(28, 61, 90, 0.08) 0%, rgba(46, 126, 168, 0.05) 100%);
    pointer-events: none;
}

/* ===== Services Banner Extended ===== */
.page-banner--services {
    height: auto;
    min-height: 420px;
    padding-bottom: 40px;
    padding-top: 120px;
    align-items: center;
}

.banner-description {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.05rem;
    line-height: 1.6;
    max-width: 800px;
    margin-top: 12px;
}

.process-flow--banner {
    margin-bottom: 0;
    padding: 0;
}

.process-icon--banner {
    background: rgba(255, 255, 255, 0.18) !important;
    border-color: rgba(255, 255, 255, 0.5) !important;
    color: var(--pearl) !important;
}

.process-step:hover .process-icon--banner {
    background: rgba(255, 255, 255, 0.35) !important;
    border-color: rgba(255, 255, 255, 0.7) !important;
    color: var(--pearl) !important;
}

.process-label--banner {
    color: rgba(255, 255, 255, 0.9) !important;
}

.process-arrow--banner {
    color: rgba(255, 255, 255, 0.6) !important;
}

/* ===== Banner split: title + process flow side by side ===== */
.banner-content--split {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 48px;
    width: 100%;
    max-width: 1140px;
    text-align: left;
}

.banner-title-side {
    flex-shrink: 0;
}

.banner-content--split .process-flow--banner {
    flex: 1;
    max-width: 480px;
}

/* Services description below banner */
.services-description {
    padding: 36px 0 0;
    text-align: center;
}

.services-description p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 860px;
    margin: 0 auto;
}

/* Compact process flow (below description paragraph) */
.process-flow--compact {
    margin: 20px auto 0;
    padding: 16px 0 0;
    max-width: 640px;
}

.process-flow--compact .process-icon {
    width: 40px;
    height: 40px;
}

.process-flow--compact .process-icon svg {
    width: 18px;
    height: 18px;
}

.process-flow--compact .process-label {
    font-size: 0.72rem;
}

.process-flow--compact .process-arrow {
    margin: 11px 4px 0;
}

.process-flow--compact .process-arrow svg {
    width: 24px;
    height: 14px;
}

/* ===== Process Flow ===== */
.process-flow {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 0;
    margin-bottom: 56px;
    padding: 32px 0;
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.process-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--foam-white);
    border: 2px solid var(--seafoam);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ocean-blue);
    transition: var(--transition);
}

.process-icon svg {
    width: 24px;
    height: 24px;
}

.process-step:hover .process-icon {
    background: var(--ocean-blue);
    color: var(--pearl);
    border-color: var(--ocean-blue);
}

.process-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.process-arrow {
    color: var(--seafoam);
    margin: 16px 16px 0;
}

.process-arrow svg {
    width: 36px;
    height: 20px;
}

/* ===== Reveal Animations ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        max-width: 320px;
        margin: 0 auto;
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .education-grid {
        grid-template-columns: 1fr;
    }

    .skills-categories {
        grid-template-columns: 1fr;
    }

    .home-intro {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .home-highlights {
        grid-template-columns: 1fr;
    }

    .home-intro--with-photo {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .home-intro-photo {
        order: -1;
    }

    .home-intro-photo-wrapper {
        width: 180px;
        height: 180px;
        margin: 0 auto;
    }

    .skills-categories--with-photo {
        grid-template-columns: 1fr;
    }

    .education-grid-2col {
        grid-template-columns: 1fr;
    }

    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .banner-content--split {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 24px;
    }

    .banner-content--split .process-flow--banner {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--ocean-dark);
        flex-direction: column;
        padding: 80px 32px 32px;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
        z-index: 999;
    }

    .nav-links.open {
        right: 0;
    }

    .nav-link {
        font-size: 1.05rem;
        padding: 12px 20px;
        color: rgba(255, 255, 255, 0.85);
    }

    .navbar.scrolled .nav-links {
        background: var(--pearl);
    }

    .navbar.scrolled .nav-links .nav-link {
        color: var(--text-secondary);
    }

    .navbar.scrolled .nav-links .nav-link.active {
        color: var(--ocean-blue);
        background: var(--foam-white);
    }

    .page-section {
        padding: 48px 0 60px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .contact-form-wrapper {
        padding: 24px;
    }

    .page-banner {
        height: 35vh;
        padding-bottom: 36px;
    }

    .process-flow {
        flex-direction: column;
        align-items: center;
        gap: 4px;
    }

    .process-arrow {
        transform: rotate(90deg);
        margin: 4px 0;
    }

    .edu-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .education-grid-2col {
        grid-template-columns: 1fr;
    }

    .banner-content--split {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 16px;
    }

    .banner-content--split .process-flow--banner {
        max-width: 100%;
    }

    .page-banner--services .process-icon {
        width: 38px;
        height: 38px;
    }

    .page-banner--services .process-icon svg {
        width: 16px;
        height: 16px;
    }

    .page-banner--services .process-label {
        font-size: 0.65rem;
    }

    .page-banner--services .process-arrow svg {
        width: 22px;
        height: 12px;
    }

    .youtube-thumbnails {
        grid-template-columns: 1fr;
    }

    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .portfolio-filters {
        gap: 6px;
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }

    .home-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .home-cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}