/* ═══════════════════════════════════════════ */
/* VARIABLES & BASE SETTINGS                   */
/* ═══════════════════════════════════════════ */
:root {
    --bg-navy: #0D1B2A;
    --bg-card: #112240;
    --text-light: #CCD6F6;
    --text-muted: #8AA6D6;
    --text-subtle: #6C8EBF;
    --cyan: #00C9FF;
    --cyan-dim: rgba(0, 201, 255, 0.1);
    --border-soft: rgba(204, 214, 246, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Offset for fixed navbar */
}

body {
    background-color: var(--bg-navy);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

/* Accessibility: Focus Visible */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 4px;
}

/* ═══════════════════════════════════════════ */
/* LAYOUT / SECTION                            */
/* ═══════════════════════════════════════════ */
.section {
    min-height: 100vh;
    padding: 100px 5% 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-heading {
    color: var(--text-light);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    display: inline-block;
    align-self: center;
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--cyan);
    border-radius: 2px;
}

/* ═══════════════════════════════════════════ */
/* ANIMATIONS (Simplified)                     */
/* ═══════════════════════════════════════════ */
.animate-on-scroll {
    opacity: 0;
    will-change: transform, opacity;
}

.fade-up {
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .animate-on-scroll {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ═══════════════════════════════════════════ */
/* SCROLL PROGRESS & BACK TO TOP               */
/* ═══════════════════════════════════════════ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--cyan), #00e5ff);
    z-index: 1001;
    width: 0%;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background-color: var(--bg-card);
    color: var(--cyan);
    border: 1px solid var(--border-soft);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 900;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--cyan-dim);
    color: var(--cyan);
    border-color: rgba(0, 201, 255, 0.35);
    transform: translateY(-3px);
}

/* ═══════════════════════════════════════════ */
/* NAVBAR                                      */
/* ═══════════════════════════════════════════ */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(13, 27, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s;
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    border-bottom: 1px solid var(--border-soft);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    height: 70px;
    max-width: 1400px;
    margin: 0 auto;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--cyan);
    letter-spacing: 1px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links li a {
    color: var(--text-light);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: color 0.25s ease;
}

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--cyan);
    transition: width 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}

.nav-links li a:hover::after,
.nav-links li a.active::after {
    width: 100%;
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--cyan);
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    cursor: pointer;
    background: none;
    border: none;
    -webkit-tap-highlight-color: transparent;
}

.hamburger span {
    width: 100%;
    height: 2px;
    background-color: var(--text-light);
    transition: all 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
    background-color: var(--cyan);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
    background-color: var(--cyan);
}

/* ═══════════════════════════════════════════ */
/* 1. LANDING / HERO                           */
/* ═══════════════════════════════════════════ */
#landing {
    padding-top: 120px;
    padding-bottom: 70px;
    min-height: 100svh;
    text-align: center;
}

.landing-content {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.landing-name {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--text-light);
    line-height: 1.05;
    margin-bottom: 1rem;
}

.landing-designations {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    font-weight: 500;
    color: var(--cyan);
    margin-bottom: 1.5rem;
}

.landing-intro {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.cta-btn {
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.28s ease, color 0.28s ease, background-color 0.28s ease, border-color 0.28s ease;
}

.cta-btn.primary {
    background-color: var(--cyan);
    color: var(--bg-navy);
    border: 2px solid var(--cyan);
}

.cta-btn.primary:hover {
    background-color: transparent;
    color: var(--cyan);
    transform: translateY(-3px);
}

.cta-btn.primary:active {
    transform: translateY(-1px) scale(0.98);
}

.cta-btn.secondary {
    background-color: transparent;
    color: var(--text-light);
    border: 2px solid var(--border-soft);
}

.cta-btn.secondary:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    transform: translateY(-3px);
}

.cta-btn.secondary:active {
    transform: translateY(-1px) scale(0.98);
}

.social-icons {
    display: flex;
    gap: 1.5rem;
}

.social-icons a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: 1px solid var(--border-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.2rem;
    transition: all 0.3s;
}

.social-icons a:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    background-color: var(--cyan-dim);
    transform: translateY(-3px);
}

/* ═══════════════════════════════════════════ */
/* 2. ABOUT ME                                 */
/* ═══════════════════════════════════════════ */
.about-container {
    max-width: 1120px;
    margin: 0 auto;
    width: 100%;
}

.about-main {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 4rem;
    align-items: start;
}

.about-left {
    display: flex;
    justify-content: center;
}

.about-photo {
    width: 100%;
    max-width: 300px;
    border-radius: 16px;
    object-fit: cover;
    border: 1px solid var(--border-soft);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.45s ease, border-color 0.45s ease;
}

.about-photo:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 45px rgba(0, 201, 255, 0.10);
    border-color: rgba(0, 201, 255, 0.22);
}

.about-right {
    flex: 1;
}

.about-intro {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.about-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.about-column h3 {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-soft);
    padding-bottom: 0.5rem;
}

.about-column ul {
    list-style: none;
}

.about-column li {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    padding-left: 1.2rem;
    position: relative;
    font-size: 0.95rem;
}

.about-column li::before {
    content: '▸';
    color: var(--cyan);
    position: absolute;
    left: 0;
}

.about-tagline {
    color: var(--text-light);
    font-weight: 500;
    padding: 1rem;
    background-color: var(--bg-card);
    border-left: 3px solid var(--cyan);
    border-radius: 0 8px 8px 0;
}

.quick-profile {
    display: flex;
    gap: 0.8rem;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.quick-link {
    color: var(--cyan);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    width: fit-content;
    transition: color 0.25s ease, transform 0.25s ease;
}

.quick-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 1px;
    background: var(--cyan);
    transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.quick-link:hover {
    color: var(--text-light);
    transform: translateX(2px);
}

.quick-link:hover::after {
    width: 100%;
}

.quick-sep {
    color: var(--text-subtle);
}

.about-highlights {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 1120px;
    margin: 3rem auto 0;
    padding: 2rem 120px 0;
    border-top: 1px solid var(--border-soft);
}

.highlight-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.highlight-number {
    color: var(--cyan);
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.3rem;
}

.highlight-text {
    color: var(--text-subtle);
    font-size: 0.85rem;
    line-height: 1.4;
}

/* ═══════════════════════════════════════════ */
/* 3. PROJECTS                                 */
/* ═══════════════════════════════════════════ */
.projects-tier-label {
    text-align: center;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    font-weight: 600;
}

.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    overflow: hidden;
    margin: 0 auto 3rem;
    max-width: 1120px;
    display: flex;
    flex-direction: column;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s ease;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 201, 255, 0.12);
    border-color: rgba(0, 201, 255, 0.3);
}

.featured-project {
    flex-direction: row;
}

.project-preview {
    flex: 0 0 46%;
    background-color: var(--bg-navy);
    padding: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--border-soft);
}

.browser-frame {
    width: 100%;
    max-width: 620px;
    background-color: #1a1a1a;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(204, 214, 246, 0.08);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.45s ease, border-color 0.45s ease;
}

.project-card:hover .browser-frame {
    transform: translateY(-4px) scale(1.015);
    box-shadow: 0 22px 55px rgba(0, 201, 255, 0.12);
    border-color: rgba(0, 201, 255, 0.22);
}

.browser-topbar {
    height: 20px;
    background-color: #2d2d2d;
    display: flex;
    align-items: center;
    padding: 0 10px;
    gap: 5px;
}

.browser-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #555;
}

.browser-screenshot {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    object-position: top center;
}

.mobile-frame {
    width: 100%;
    max-width: 260px;
    aspect-ratio: 9 / 19;
    background-color: #1a1a1a;
    border-radius: 20px;
    border: 8px solid #2d2d2d;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    margin: 0 auto;
}

.mobile-screenshot {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: top center;
}

.project-body {
    flex: 1;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
}

.project-body h3 {
    color: var(--text-light);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.project-tagline {
    color: var(--cyan);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.project-details {
    margin-bottom: 1.5rem;
}

.detail-block {
    margin-bottom: 1rem;
}

.detail-block h4 {
    color: var(--text-light);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.3rem;
}

.detail-block p, .detail-block ul {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.detail-block ul {
    list-style: none;
}

.detail-block li {
    position: relative;
    padding-left: 1rem;
    margin-bottom: 0.3rem;
}

.detail-block li::before {
    content: '•';
    color: var(--cyan);
    position: absolute;
    left: 0;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    margin-top: auto;
}

.tech-tag {
    background-color: var(--cyan-dim);
    color: var(--text-light);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 1.5rem;
}

.project-link {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    width: fit-content;
    transition: color 0.25s ease, transform 0.25s ease;
}

.project-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 1px;
    background: var(--cyan);
    transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-link:hover {
    color: var(--cyan);
    transform: translateX(2px);
}

.project-link:hover::after {
    width: 100%;
}

.project-link.primary-link {
    color: var(--cyan);
}

.demo-note {
    margin-top: 1rem;
    padding: 1rem;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    border: 1px dashed var(--border-soft);
}

.demo-note-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.demo-credentials {
    display: flex;
    gap: 1rem;
    align-items: center;
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.credential-item {
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.credential-item code {
    background-color: var(--bg-navy);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--cyan);
}

.credential-separator {
    color: var(--border-soft);
}

.copy-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
}

.copy-btn:hover {
    color: var(--text-light);
}

.copy-btn.copied {
    color: #27c93f;
}

.more-projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1120px;
    margin: 0 auto 3rem;
}

.compact-project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s ease;
}

.compact-project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 201, 255, 0.12);
    border-color: rgba(0, 201, 255, 0.3);
}

/* ═══════════════════════════════════════════ */
/* 4. EXPERIENCE                               */
/* ═══════════════════════════════════════════ */
.experience-card {
    display: flex;
    background-color: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-soft);
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}

.exp-left {
    flex: 0 0 220px;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    border-right: 1px solid var(--border-soft);
}

.exp-icon {
    font-size: 2rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.company-name {
    color: var(--text-light);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.emp-type, .duration, .location {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
}

.exp-right {
    flex: 1;
    padding: 2rem 2.5rem;
}

.exp-right h3 {
    color: var(--text-light);
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
}

.exp-section-title {
    color: var(--cyan);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.8rem;
    margin-top: 1.5rem;
}

.exp-right ul {
    list-style: none;
}

.exp-right li {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 0.8rem;
    padding-left: 1.2rem;
    position: relative;
    font-size: 0.95rem;
}

.exp-right li::before {
    content: '▸';
    color: var(--text-muted);
    position: absolute;
    left: 0;
}

/* ═══════════════════════════════════════════ */
/* 5. EDUCATION                                */
/* ═══════════════════════════════════════════ */
.education-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-soft);
    padding: 2.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.edu-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
    border-bottom: 1px solid var(--border-soft);
    padding-bottom: 1.5rem;
}

.edu-header h3 {
    color: var(--text-light);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.edu-cap-icon {
    color: var(--text-muted);
    margin-right: 0.5rem;
}

.edu-institution {
    color: var(--cyan);
    font-weight: 500;
}

.edu-meta {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: right;
}

.edu-highlights {
    list-style: none;
}

.edu-highlights li {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 0.8rem;
    padding-left: 1.2rem;
    position: relative;
    font-size: 0.95rem;
}

.edu-highlights li::before {
    content: '▸';
    color: var(--text-muted);
    position: absolute;
    left: 0;
}

/* ═══════════════════════════════════════════ */
/* 6. SKILLS                                   */
/* ═══════════════════════════════════════════ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.skill-category {
    background-color: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    padding: 2rem;
}

.skill-category h3 {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.cat-icon {
    color: var(--text-muted);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    background-color: rgba(0, 0, 0, 0.2);
    color: var(--text-muted);
    border: 1px solid var(--border-soft);
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, color 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-tag i {
    font-size: 1.1rem;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-category:hover .skill-tag {
    color: var(--text-light);
    border-color: rgba(204, 214, 246, 0.15);
}

.skill-tag:hover {
    transform: translateY(-3px) scale(1.02);
    border-color: rgba(0, 201, 255, 0.35);
    color: var(--cyan) !important;
}

.skill-tag:hover i {
    transform: scale(1.12);
}

/* ═══════════════════════════════════════════ */
/* 7. CERTIFICATIONS                           */
/* ═══════════════════════════════════════════ */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.compact-cert-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s ease;
}

.compact-cert-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 201, 255, 0.12);
    border-color: rgba(0, 201, 255, 0.3);
}

.cert-info {
    margin-bottom: 1.5rem;
}

.cert-title {
    color: var(--text-light);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.cert-provider {
    color: var(--text-subtle);
    font-size: 0.95rem;
}

.cert-view-link {
    color: var(--cyan);
    font-size: 0.95rem;
    font-weight: 600;
    align-self: flex-start;
    position: relative;
    width: fit-content;
    transition: color 0.25s ease, transform 0.25s ease;
}

.cert-view-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 1px;
    background: var(--cyan);
    transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cert-view-link:hover {
    color: var(--text-light);
    transform: translateX(2px);
}

.cert-view-link:hover::after {
    width: 100%;
}

/* ═══════════════════════════════════════════ */
/* 9. CONTACT                                  */
/* ═══════════════════════════════════════════ */
.contact-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    padding: 2.5rem;
}

.contact-form-title, .contact-info-title {
    color: var(--text-light);
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

.form-group {
    position: relative;
    margin-bottom: 1.8rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid var(--border-soft);
    padding: 10px 0;
    color: var(--text-light);
    font-size: 1rem;
    transition: border-color 0.25s ease, color 0.25s ease;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group label {
    position: absolute;
    top: 10px;
    left: 0;
    color: var(--text-muted);
    font-size: 1rem;
    transition: all 0.3s;
    pointer-events: 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: -15px;
    font-size: 0.8rem;
    color: var(--text-light);
}

.form-group:focus-within label {
    color: var(--cyan);
}

.form-group .underline {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    width: 0%;
    background-color: var(--cyan);
    transition: width 0.3s;
}

.form-group:focus-within .underline {
    width: 100%;
}

.form-group input:focus ~ .underline,
.form-group textarea:focus ~ .underline {
    width: 100%;
}

/* Form validation styling */
.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-bottom-color: #ff6b6b;
}

.form-group input:invalid:not(:placeholder-shown) ~ label,
.form-group textarea:invalid:not(:placeholder-shown) ~ label {
    color: #ff6b6b;
}

.send-btn {
    width: 100%;
    background-color: var(--bg-navy);
    color: var(--text-light);
    border: 1px solid var(--border-soft);
    padding: 14px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 1rem;
}

.send-btn:hover:not(:disabled) {
    background-color: var(--cyan-dim);
    color: var(--cyan);
    border-color: var(--cyan);
}

.send-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.form-status {
    margin-top: 1.5rem;
    padding: 12px;
    border-radius: 6px;
    font-size: 0.95rem;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.form-status.success {
    background-color: rgba(39, 201, 63, 0.1);
    color: #27c93f;
    border: 1px solid rgba(39, 201, 63, 0.2);
    opacity: 1;
    visibility: visible;
}

.form-status.error {
    background-color: rgba(255, 107, 107, 0.1);
    color: #ff6b6b;
    border: 1px solid rgba(255, 107, 107, 0.2);
    opacity: 1;
    visibility: visible;
}

.contact-info-panel {
    display: flex;
    flex-direction: column;
}

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.info-icon {
    font-size: 1.5rem;
    color: var(--text-muted);
    width: 30px;
    text-align: center;
}

.info-text {
    color: var(--text-light);
    font-size: 0.95rem;
}

.info-text a:hover {
    color: var(--cyan);
}

.mailto-fallback {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    padding: 12px 0;
}

.mailto-fallback:hover {
    color: var(--text-light);
}

/* ═══════════════════════════════════════════ */
/* FOOTER                                      */
/* ═══════════════════════════════════════════ */
footer {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-soft);
    padding: 4rem 5% 2rem;
    text-align: center;
}

.footer-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.footer-socials {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.footer-socials a {
    color: var(--text-muted);
    font-size: 1.3rem;
    transition: color 0.3s;
}

.footer-socials a:hover {
    color: var(--cyan);
}

.footer-copy {
    color: rgba(108, 142, 191, 0.6);
    font-size: 0.85rem;
}

/* ═══════════════════════════════════════════ */
/* RESPONSIVE DESIGN                           */
/* ═══════════════════════════════════════════ */

/* Tablet: 992px */
@media (max-width: 992px) {
    .about-main {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-left {
        justify-content: center;
    }
    
    .about-photo {
        max-width: 280px;
    }
    
    .about-highlights {
        flex-direction: column;
        gap: 2rem;
        max-width: 320px;
        margin: 2.5rem auto 0;
        padding: 2rem 0 0;
    }
    
    .featured-project {
        flex-direction: column;
    }
    
    .project-preview {
        border-right: none;
        border-bottom: 1px solid var(--border-soft);
        padding: 1.5rem;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-info-panel {
        order: -1;
    }
    
    .more-projects-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile: 768px */
@media (max-width: 768px) {
    .section {
        padding: 80px 5% 40px;
    }

    .section-heading {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--bg-navy);
        border-bottom: 1px solid var(--border-soft);
        padding: 1rem 0;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
    }
    
    .nav-links.active li {
        width: 100%;
        text-align: center;
    }
    
    .nav-links.active li a {
        display: block;
        padding: 1rem;
    }
    
    .about-columns {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .exp-left {
        flex: none;
        border-right: none;
        border-bottom: 1px solid var(--border-soft);
        padding: 1.5rem;
    }
    
    .experience-card {
        flex-direction: column;
    }
    
    .exp-right {
        padding: 1.5rem;
    }
    
    .edu-header {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    
    .edu-meta {
        text-align: left;
    }
    
    .demo-credentials {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .credential-separator {
        display: none;
    }
    

    .projects-tier-label::before,
    .projects-tier-label::after {
        display: none;
    }
}

/* Small Mobile: 480px */
@media (max-width: 480px) {
    .landing-name {
        font-size: 2.2rem;
    }
    
    .landing-designations {
        font-size: 1.1rem;
    }
    
    .about-left {
        width: 200px;
    }
    
    .project-body {
        padding: 1.5rem;
    }
    
    .project-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .project-links {
        flex-direction: column;
        gap: 1rem;
    }
}