/* ==========================================================================
   Gopika J Portfolio — Minimalist Light Mode Theme (Reference Match)
   ========================================================================== */

/* Design Tokens */
:root {
    --bg-outer: #DCD7CE;
    --bg-card: #EFECE6;
    --bg-card-inner: #F6F4F0;
    --bg-surface: #FFFFFF;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --text-muted: #888888;
    --border-light: #E2DDD5;
    --border-subtle: rgba(0, 0, 0, 0.06);
    --btn-dark: #1E1E1E;
    --btn-dark-hover: #000000;
    --btn-light: #FFFFFF;
    --btn-light-hover: #F2F0EB;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.08);
    --radius-outer: 44px;
    --radius-inner: 24px;
    --radius-pill: 999px;
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Outfit', 'Plus Jakarta Sans', sans-serif;
}

/* Reset & Global Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-outer);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding: 32px 16px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    overflow-x: hidden;
    width: 100%;
}

/* Page Outer Wrapper */
.page-wrapper {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    overflow-x: hidden;
}

/* Main Card Shell */
.main-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-outer);
    padding: 48px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
}

/* Navigation Bar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 64px;
    flex-wrap: wrap;
    gap: 16px;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.email-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-right: 4px;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-right a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-right a:hover {
    color: var(--text-primary);
}

.nav-sep {
    color: var(--text-muted);
    font-weight: 300;
}

/* Pill Buttons */
.pill-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.pill-btn.light {
    background-color: var(--btn-light);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.pill-btn.light:hover {
    background-color: var(--btn-light-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.pill-btn.dark {
    background-color: var(--btn-dark);
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.pill-btn.dark:hover {
    background-color: var(--btn-dark-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.22);
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 32px 0 64px;
}

.avatar-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 28px;
}

.hero-avatar {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 24%;
    filter: grayscale(100%) contrast(1.12) brightness(0.98);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    border: 3px solid #FFFFFF;
    display: block;
}

/* Floating Badges */
.floating-badge {
    background: #FFFFFF;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-md);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
    white-space: nowrap;
}

.hero-name-badge {
    position: absolute;
    top: 20px;
    left: 85px;
    transform: rotate(4deg);
    animation: subtleFloat 4s ease-in-out infinite alternate;
}

@keyframes subtleFloat {
    0% { transform: rotate(4deg) translateY(0px); }
    100% { transform: rotate(4deg) translateY(-4px); }
}

.hero-headline {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 4.8vw, 3.8rem);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    max-width: 760px;
    margin: 0 auto 32px;
}

.hero-cta-wrapper {
    display: flex;
    justify-content: center;
}

.hero-btn {
    padding: 14px 32px;
    font-size: 0.92rem;
    border-radius: var(--radius-pill);
}

.arrow-icon {
    font-size: 1.1rem;
    line-height: 1;
    display: inline-block;
    transition: transform 0.2s ease;
}

.hero-btn:hover .arrow-icon {
    transform: translate(2px, -2px);
}

/* Brand / Projects Names Bar */
.projects-brand-bar {
    padding: 48px 0;
    border-top: 1px dashed rgba(0, 0, 0, 0.08);
    margin-top: 32px;
}

.brand-bar-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.brand-item {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    opacity: 0.75;
    transition: all 0.25s ease;
    padding: 8px 16px;
    border-radius: 12px;
}

.brand-item:hover {
    opacity: 1;
    transform: translateY(-2px);
    background-color: rgba(255, 255, 255, 0.4);
}

.brand-icon {
    width: 22px;
    height: 22px;
}

.brand-name {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.font-serif {
    font-family: Georgia, serif;
}

.font-mono {
    font-family: 'Courier New', monospace;
    font-weight: 800;
}

/* Value Section & Services Badge */
.value-section {
    text-align: center;
    padding: 64px 0 32px;
}

.value-headline {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem, 3.2vw, 2.6rem);
    font-weight: 500;
    line-height: 1.25;
    color: #242424;
    letter-spacing: -0.01em;
    margin-bottom: 48px;
}

.divider-with-badge {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 32px 0 56px;
}

.divider-line {
    width: 100%;
    height: 1px;
    background-color: var(--border-light);
}

.services-badge {
    position: absolute;
    transform: rotate(-3deg);
    padding: 7px 22px;
    font-size: 0.85rem;
}

/* Services Grid */
.services-section {
    margin-bottom: 80px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background-color: var(--bg-card-inner);
    border-radius: var(--radius-inner);
    padding: 32px 24px;
    border: 1px solid var(--border-subtle);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.service-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    background-color: #FFFFFF;
}

.service-icon-box {
    width: 36px;
    height: 36px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.service-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.service-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Projects Showcase Section */
.projects-section {
    padding: 64px 0;
    border-top: 1px solid var(--border-light);
}

.section-header {
    margin-bottom: 40px;
}

.section-tag {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    display: block;
    margin-bottom: 8px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.project-card {
    background-color: var(--bg-surface);
    border-radius: var(--radius-inner);
    padding: 36px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: #D0C9BD;
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.project-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.project-number {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 4px 10px;
    border-radius: 8px;
}

.project-name {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--text-primary);
}

.project-category {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.project-summary {
    font-size: 0.94rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.55;
}

.project-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tech-tag {
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--bg-card);
    color: var(--text-primary);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
}

.project-highlights {
    margin-top: auto;
    padding-left: 18px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.project-highlights li {
    margin-bottom: 6px;
}

/* Publications & Certifications Section */
.extra-section {
    padding: 64px 0;
    border-top: 1px solid var(--border-light);
}

.extra-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
}

.pub-card {
    background: var(--bg-surface);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border-light);
    margin-bottom: 20px;
    transition: transform 0.2s ease;
}

.pub-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.pub-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.pub-meta {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: flex;
    gap: 12px;
}

.pub-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.cert-card {
    background: var(--bg-surface);
    padding: 20px 24px;
    border-radius: 16px;
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.cert-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.cert-info h4 {
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--text-primary);
}

.cert-info p {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* Experience & Skills */
.experience-section {
    padding: 64px 0;
    border-top: 1px solid var(--border-light);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
}

.column-heading {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 28px;
    color: var(--text-primary);
}

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

.timeline-item {
    background: var(--bg-surface);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border-light);
}

.timeline-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.job-role {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
}

.job-date {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
}

.job-company {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}

.job-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Skills Column */
.skills-wrapper {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skill-category {
    background: var(--bg-surface);
    padding: 20px;
    border-radius: 16px;
    border: 1px solid var(--border-light);
}

.skill-category h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skills-list span {
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--bg-card);
    padding: 5px 12px;
    border-radius: var(--radius-pill);
    color: var(--text-primary);
}

/* Contact Section */
.contact-section {
    text-align: center;
    padding: 80px 0 16px;
}

.contact-icon-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.handshake-icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin: 0 auto;
}

.contact-headline {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 600;
    line-height: 1.18;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: 32px;
}

.contact-buttons-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-bottom: 64px;
}

.contact-btn {
    padding: 12px 28px;
    font-size: 0.9rem;
}

.btn-icon {
    width: 16px;
    height: 16px;
}

.footer-divider {
    width: 100%;
    height: 1px;
    background-color: var(--border-light);
    margin-bottom: 28px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 12px;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* Modal Popup */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    background: var(--bg-surface);
    width: 100%;
    max-width: 620px;
    border-radius: var(--radius-inner);
    padding: 36px;
    position: relative;
    box-shadow: var(--shadow-lg);
    max-height: 85vh;
    overflow-y: auto;
    animation: modalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--bg-card);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 1rem;
    cursor: pointer;
}

.modal-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.modal-header p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.modal-body h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 18px 0 8px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 4px;
}

.modal-body p, .modal-body ul {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-body ul {
    padding-left: 20px;
}

.modal-exp-item {
    margin-bottom: 14px;
}

.modal-exp-item h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    display: block;
    margin-bottom: 6px;
}

.modal-footer {
    margin-top: 28px;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--btn-dark);
    color: #FFFFFF;
    padding: 12px 24px;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 2000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* Tablet & Medium Screens (max-width: 992px) */
@media (max-width: 992px) {
    .main-card {
        padding: 32px 24px;
        border-radius: 36px;
    }
    .navbar {
        margin-bottom: 48px;
    }
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .projects-grid, .experience-grid, .extra-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .brand-bar-container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        justify-items: center;
    }
}

/* Mobile & Small Screens (max-width: 768px) */
@media (max-width: 768px) {
    body {
        padding: 12px 6px;
    }
    .main-card {
        padding: 28px 16px;
        border-radius: 28px;
    }
    .navbar {
        flex-direction: column;
        align-items: center;
        gap: 16px;
        text-align: center;
        margin-bottom: 40px;
        width: 100%;
    }
    .nav-left {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 10px;
        width: 100%;
    }
    .email-text {
        word-break: break-all;
        text-align: center;
        font-size: 0.85rem;
        margin-right: 0;
    }
    .nav-right {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
        gap: 8px;
    }
    .hero-section {
        padding: 16px 0 36px;
    }
    .avatar-wrapper {
        margin-bottom: 24px;
    }
    .hero-name-badge {
        position: relative;
        top: 8px;
        left: 0;
        transform: rotate(0deg);
        display: inline-block;
        margin-top: 12px;
        animation: none;
    }
    .hero-headline {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
        margin-bottom: 24px;
        padding: 0 8px;
    }
    .projects-brand-bar {
        padding: 32px 0;
    }
    .brand-bar-container {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        width: 100%;
    }
    .brand-item {
        justify-content: center;
        padding: 8px 12px;
        width: 100%;
    }
    .brand-name {
        font-size: 1.1rem;
    }
    .value-headline {
        font-size: 1.5rem;
        padding: 0 8px;
    }
    .services-grid {
        grid-template-columns: 1fr;
    }
    .project-card {
        padding: 24px 18px;
    }
    .project-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }
    .contact-headline {
        font-size: 1.85rem;
    }
    .contact-buttons-wrapper {
        flex-direction: column;
        width: 100%;
        max-width: 280px;
        margin: 0 auto 40px;
        gap: 12px;
    }
    .contact-btn {
        width: 100%;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: center;
        gap: 12px;
        text-align: center;
        width: 100%;
    }
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }
}

/* Extra Small Mobile Devices (max-width: 480px) */
@media (max-width: 480px) {
    body {
        padding: 6px 4px;
    }
    .main-card {
        padding: 20px 12px;
        border-radius: 22px;
    }
    .hero-headline {
        font-size: 1.65rem;
    }
    .brand-bar-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    .brand-name {
        font-size: 0.98rem;
    }
    .tech-tag {
        font-size: 0.72rem;
        padding: 3px 10px;
    }
    .toast {
        left: 16px;
        right: 16px;
        bottom: 16px;
        text-align: center;
    }
}