/* ===========================
   Light Mode Variables
   =========================== */

[data-theme="light"] {
    --primary-color: #00994D;
    --secondary-color: #0097A7;
    --accent-color: #00CC66;
    --text-dark: #0f172a;
    --text-light: #374151;
    --bg-light: #f0f4f8;
    --bg-white: #ffffff;
    --bg-surface: #f8fafc;
    --bg-panel: #f1f5f9;
    --border-glow: rgba(0, 153, 77, 0.12);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 2px 8px rgba(0, 153, 77, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.06);
    color-scheme: light;
}

/* Light mode: Body & Global */
[data-theme="light"] body {
    background: #f0f4f8;
    color: #1e293b;
}

[data-theme="light"] body::after {
    display: none;
}

:root {
    --glass-bg: rgba(5, 10, 18, 0.7);
    --glass-border: rgba(0, 255, 102, 0.1);
    --glass-blur: 12px;
    color-scheme: dark;
}

/* ===========================
   Theme Toggle Button
   =========================== */

.theme-toggle-btn {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 999;
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: var(--bg-surface);
    color: var(--primary-color);
    border: 1px solid rgba(0, 255, 102, 0.15);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

[data-theme="light"] .theme-toggle-btn {
    border-color: rgba(0, 0, 0, 0.1);
    background: #ffffff;
    color: #475569;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.theme-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 10px rgba(0, 255, 102, 0.2), var(--shadow-md);
}

/* ===========================
   Glassmorphism Classes
   =========================== */

.glass-effect {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
}

/* Theme transitions */
.tech-card, .contact-card, .project-card, .about-section, .projects-section, .stats-section {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* ===========================
   Dark Mode: Body text override
   (prevent neon #66FF99 from rendering as body paragraph text)
   =========================== */

/* Dark mode: paragraphs and secondary text use --text-light (#B8CBDA = ~5.2:1 WCAG AA) */
:not([data-theme="light"]) .about-text,
:not([data-theme="light"]) .contact-card p,
:not([data-theme="light"]) .project-description,
:not([data-theme="light"]) .profile-details,
:not([data-theme="light"]) .modal-body p {
    color: var(--text-light);
}

/* ===========================
   Light Mode: Sections
   =========================== */

/* Hero — stays dark in both modes for impact */
[data-theme="light"] .hero-section {
    background: linear-gradient(135deg, #050A12, #0A0F1F, #0F1A33);
}

/* About */
[data-theme="light"] .about-section {
    background: #ffffff;
}

[data-theme="light"] .about-text {
    /* #374151 on white = ~9.2:1 WCAG AAA pass */
    color: #374151;
}

/* Tech Stack */
[data-theme="light"] .tech-section {
    background: #f0f4f8;
}

/* AI Arsenal */
[data-theme="light"] .ai-tools-section {
    background: #f0f4f8;
}

[data-theme="light"] .ai-tools-section::before {
    background-image:
        linear-gradient(rgba(0, 153, 77, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 153, 77, 0.04) 1px, transparent 1px);
}

[data-theme="light"] .ai-tools-subtitle {
    color: var(--secondary-color);
}

[data-theme="light"] .ai-tool-card {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.06);
    border-top-color: var(--primary-color);
}

[data-theme="light"] .ai-tool-card:hover {
    border-color: rgba(0, 153, 77, 0.3);
    box-shadow: 0 12px 40px rgba(0, 153, 77, 0.1);
}

[data-theme="light"] .ai-tool-terminal {
    background: #f1f5f9;
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .ai-tool-name {
    /* #1e293b on #f1f5f9 = ~9.7:1 WCAG AAA */
    color: #1e293b;
}

[data-theme="light"] .ai-tool-icon {
    color: var(--primary-color);
    text-shadow: none;
}

[data-theme="light"] .ai-tool-role {
    color: #1e293b;
}

[data-theme="light"] .ai-tool-tag {
    color: var(--secondary-color);
}

[data-theme="light"] .ai-tool-card--featured {
    border-top-color: var(--secondary-color);
    border-color: rgba(0, 151, 167, 0.15);
}

[data-theme="light"] .ai-tool-card--featured .ai-tool-icon {
    color: var(--secondary-color);
    text-shadow: none;
}

[data-theme="light"] .tech-marquee::before {
    background:
        linear-gradient(90deg, rgba(240, 244, 248, 0.96), transparent 14%),
        linear-gradient(270deg, rgba(240, 244, 248, 0.96), transparent 14%);
}

[data-theme="light"] .tech-marquee::after {
    border-top-color: rgba(0, 0, 0, 0.06);
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .tech-marquee .tech-badge {
    background:
        linear-gradient(135deg, rgba(0, 153, 77, 0.14), rgba(0, 153, 77, 0.04)),
        #ffffff;
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .tech-marquee .tech-badge:hover {
    border-color: rgba(0, 153, 77, 0.24);
    box-shadow: 0 16px 36px rgba(0, 153, 77, 0.12);
}

[data-theme="light"] .tech-marquee .tech-badge__icon {
    background: rgba(15, 23, 42, 0.04);
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .tech-marquee .tech-badge__label {
    color: #1e293b;
}

/* Stats */
[data-theme="light"] .stats-section {
    background: #ffffff;
}

[data-theme="light"] .stat-card {
    background: #f8fafc;
    border-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .stat-card:hover {
    box-shadow: 0 12px 40px rgba(0, 153, 77, 0.08);
    border-color: rgba(0, 153, 77, 0.2);
}

[data-theme="light"] .stat-number {
    color: var(--primary-color);
    text-shadow: none;
}

[data-theme="light"] .stat-label {
    /* #4B5563 on #f8fafc = ~5.4:1 contrast — WCAG AA pass */
    color: #4B5563;
}

/* Projects */
[data-theme="light"] .projects-section {
    background: #f0f4f8;
}

[data-theme="light"] .project-card {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .project-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 12px 40px rgba(0, 153, 77, 0.1);
}

[data-theme="light"] .project-title {
    color: #1e293b;
}

[data-theme="light"] .project-description {
    color: #475569;
}

[data-theme="light"] .snapshot-section,
[data-theme="light"] .build-section,
[data-theme="light"] .learning-section,
[data-theme="light"] .contact-section {
    background: #f0f4f8;
}

[data-theme="light"] .strengths-section,
[data-theme="light"] .resume-cta-section,
[data-theme="light"] .featured-project-section,
[data-theme="light"] .about-section {
    background: #ffffff;
}

[data-theme="light"] .snapshot-card,
[data-theme="light"] .build-card,
[data-theme="light"] .learning-card,
[data-theme="light"] .resume-cta-panel,
[data-theme="light"] .featured-project-panel {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .snapshot-value,
[data-theme="light"] .build-card h3,
[data-theme="light"] .featured-project-title,
[data-theme="light"] .section-title--left,
[data-theme="light"] .strength-item span {
    color: #1e293b;
}

[data-theme="light"] .snapshot-detail,
[data-theme="light"] .build-card p,
[data-theme="light"] .learning-card p,
[data-theme="light"] .resume-cta-copy,
[data-theme="light"] .featured-project-description,
[data-theme="light"] .featured-project-meta,
[data-theme="light"] .about-fact,
[data-theme="light"] .hero-summary {
    color: #475569;
}

[data-theme="light"] .about-fact,
[data-theme="light"] .strength-item {
    background: #f8fafc;
    border-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .project-meta-item {
    background: rgba(0, 151, 167, 0.08);
    border-color: rgba(0, 151, 167, 0.12);
}

[data-theme="light"] .project-purpose,
[data-theme="light"] .project-link-pill {
    color: #475569;
}

[data-theme="light"] .project-link-pill {
    background: rgba(15, 23, 42, 0.04);
    border-color: rgba(15, 23, 42, 0.06);
}

[data-theme="light"] .hero-highlight {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(15, 23, 42, 0.08);
    color: #334155;
}

[data-theme="light"] .tech-badge {
    background: rgba(0, 153, 77, 0.06);
    color: var(--primary-color);
    border-color: rgba(0, 153, 77, 0.15);
}

[data-theme="light"] .project-overlay {
    background: linear-gradient(135deg, rgba(0, 153, 77, 0.9), rgba(0, 151, 167, 0.85));
}

/* Contact */
[data-theme="light"] .contact-section {
    background: #ffffff;
}

[data-theme="light"] .contact-card {
    background: #f8fafc;
    border-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .contact-card:hover {
    box-shadow: 0 12px 40px rgba(0, 153, 77, 0.08);
    border-color: rgba(0, 153, 77, 0.25);
}

[data-theme="light"] .contact-card h3 {
    color: #1e293b;
}

[data-theme="light"] .contact-card p {
    color: #475569;
}

[data-theme="light"] .contact-icon {
    background: linear-gradient(135deg, rgba(0, 153, 77, 0.08), rgba(0, 151, 167, 0.06));
    border-color: rgba(0, 153, 77, 0.15);
    color: var(--primary-color);
    box-shadow: none;
}

/* Footer — stays dark in both modes */
[data-theme="light"] .footer {
    background: #1e293b;
    /* rgba(255,255,255,0.87) on #1e293b = ~7:1 contrast — WCAG AA pass */
    color: rgba(255, 255, 255, 0.87);
}

[data-theme="light"] .footer .admin-link a {
    color: var(--accent-color);
}

/* Section Titles — override dark mode white color and glow */
[data-theme="light"] .section-title {
    color: #1e293b !important;
    text-shadow: none;
}

[data-theme="light"] .section-title::after {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    box-shadow: none;
}

/* ===========================
   Light Mode: Global Body Text
   =========================== */

/* Ensure all paragraphs and headings inside sections are visible */
[data-theme="light"] .about-section h2,
[data-theme="light"] .about-section h3,
[data-theme="light"] .about-section p,
[data-theme="light"] .about-text {
    color: #1e293b;
}

[data-theme="light"] .about-text p,
[data-theme="light"] .about-section .about-text {
    color: #374151;
}

/* Tech Stack — h3 and any description text */
[data-theme="light"] .tech-section h2,
[data-theme="light"] .tech-marquee .tech-badge__label,
[data-theme="light"] .tech-card p {
    color: #1e293b;
}

/* Stats section numbers and labels */
[data-theme="light"] .stats-section h2,
[data-theme="light"] .stat-card h2,
[data-theme="light"] .stat-card h3 {
    color: #1e293b;
}

/* Journey / Timeline section */
[data-theme="light"] .timeline-section h2 {
    color: #1e293b;
}

[data-theme="light"] .timeline-subtitle {
    color: #4B5563;
}

[data-theme="light"] .timeline-description {
    color: #374151;
}

/* Contact section */
[data-theme="light"] .contact-section h2 {
    color: #1e293b;
}

[data-theme="light"] .contact-card h3 {
    color: #1e293b;
}

[data-theme="light"] .contact-card p {
    color: #374151;
}

/* Projects section */
[data-theme="light"] .projects-section h2 {
    color: #1e293b;
}

/* ===========================
   Light Mode: Navbar
   =========================== */

[data-theme="light"] .cyber-navbar {
    background: rgba(255, 255, 255, 0.85);
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .cyber-navbar.scrolled {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .nav-brand-bracket {
    color: var(--secondary-color);
}

[data-theme="light"] .nav-brand-text {
    color: var(--primary-color);
}

[data-theme="light"] .nav-link {
    /* #374151 on white = ~9.7:1 contrast — WCAG AAA pass */
    color: #374151;
}

[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
    color: var(--primary-color);
    background: rgba(0, 153, 77, 0.06);
}

[data-theme="light"] .nav-toggle {
    border-color: rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .nav-toggle-bar {
    background: #1e293b;
}

@media (max-width: 768px) {
    [data-theme="light"] .nav-links {
        background: rgba(255, 255, 255, 0.98);
        border-bottom-color: rgba(0, 0, 0, 0.06);
    }
}

/* ===========================
   Light Mode: CTA Buttons
   =========================== */

[data-theme="light"] .cta-primary {
    background: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 153, 77, 0.2);
}

[data-theme="light"] .cta-primary:hover {
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 8px 24px rgba(0, 153, 77, 0.25);
}

[data-theme="light"] .cta-secondary {
    color: var(--secondary-color);
    border-color: rgba(0, 151, 167, 0.3);
}

[data-theme="light"] .cta-secondary:hover {
    background: rgba(0, 151, 167, 0.06);
    border-color: rgba(0, 151, 167, 0.5);
}

/* ===========================
   Light Mode: UI Elements
   =========================== */

[data-theme="light"] .back-to-top {
    background: #ffffff;
    color: var(--primary-color);
    border-color: rgba(0, 153, 77, 0.15);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .back-to-top:hover {
    box-shadow: 0 4px 20px rgba(0, 153, 77, 0.15);
    border-color: var(--primary-color);
}

/* Smooth Transition for Theme Switch */
body {
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===========================
   Typing Effect
   =========================== */

.typing-cursor::after {
    content: '|';
    animation: blink 1s step-start infinite;
    color: var(--primary-color);
}

@keyframes blink {
    50% { opacity: 0; }
}

/* ===========================
   Glass Modal
   =========================== */

.modal-backdrop.show {
    backdrop-filter: blur(5px);
    background-color: rgba(0, 0, 0, 0.7);
}

.modal-content {
    background: var(--bg-white);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius-lg);
    overscroll-behavior: contain;
    color: var(--text-dark);
}

[data-theme="light"] .modal-content {
    background: #ffffff;
    color: #1e293b;
    border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] #modalDesc {
    color: #475569;
}

.btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

[data-theme="light"] .btn-close {
    filter: none;
}

#hero-particles {
    opacity: 0.7;
    transition: opacity 0.5s ease;
}

[data-theme="light"] #hero-particles {
    opacity: 0.5;
}

/* ===========================
   Timeline Section
   =========================== */

.timeline-section {
    position: relative;
    padding: 60px 0;
}

[data-theme="light"] .timeline-section {
    background: #f0f4f8;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

/* Vertical Line */
.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    top: 0;
    bottom: 0;
    left: 30px;
    margin-left: -1px;
    border-radius: 3px;
    opacity: 0.3;
}

.timeline-item {
    padding: 0 0 30px 60px;
    position: relative;
    width: 100%;
}

/* Dot */
.timeline-item::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    left: 24px;
    background-color: var(--bg-white);
    border: 2px solid var(--primary-color);
    top: 25px;
    border-radius: 50%;
    z-index: 2;
    box-shadow: 0 0 8px rgba(0, 255, 102, 0.2);
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-item:hover::after {
    background-color: var(--primary-color);
    transform: scale(1.3);
    box-shadow: 0 0 5px #00ff66, 0 0 15px rgba(0, 255, 102, 0.3);
}

.timeline-content {
    padding: 25px;
    background: var(--bg-surface);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 255, 102, 0.1);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

/* Override glass-effect on timeline for solid dark bg */
.timeline-content.glass-effect {
    background: rgba(13, 21, 38, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 10px rgba(0, 255, 102, 0.08), var(--shadow-md);
    border-color: rgba(0, 255, 102, 0.2);
}

.timeline-date {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(0, 255, 102, 0.08);
    color: var(--primary-color);
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: var(--font-mono);
    margin-bottom: 10px;
    border: 1px solid rgba(0, 255, 102, 0.12);
}

[data-theme="light"] .timeline-date {
    background: rgba(0, 153, 77, 0.06);
    color: var(--primary-color);
    border-color: rgba(0, 153, 77, 0.12);
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: #ffffff;
}

[data-theme="light"] .timeline-title {
    color: #1e293b;
}

.timeline-subtitle {
    font-size: 0.95rem;
    /* Explicit color without opacity — avoids contrast reduction. #C6D8E8 on rgba(13,21,38,0.95) = ~5.0:1 WCAG AA pass */
    color: #C6D8E8;
    margin-bottom: 10px;
    font-weight: 500;
}

.timeline-description {
    /* Explicit color without opacity — #D1E3EF on rgba(13,21,38,0.95) = ~5.6:1 WCAG AA pass */
    color: #D1E3EF;
    font-size: 0.95rem;
}

/* Arrow */
.timeline-content::before {
    content: " ";
    height: 0;
    position: absolute;
    top: 25px;
    width: 0;
    z-index: 1;
    left: -10px;
    border: medium solid transparent;
    border-width: 10px 10px 10px 0;
    border-color: transparent rgba(13, 21, 38, 0.95) transparent transparent;
}

/* Light Mode Timeline */
[data-theme="light"] .timeline-content,
[data-theme="light"] .timeline-content.glass-effect {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.06);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

[data-theme="light"] .timeline-content:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 153, 77, 0.2);
}

[data-theme="light"] .timeline-content::before {
    border-color: transparent #ffffff transparent transparent;
}

[data-theme="light"] .timeline-item::after {
    background-color: #ffffff;
    box-shadow: none;
}

[data-theme="light"] .timeline-item:hover::after {
    box-shadow: 0 0 8px rgba(0, 153, 77, 0.2);
}