/* Global Variables & Reset */
:root {
    /* Dark Theme Variables (Default) */
    --bg-primary: #080c16;
    --bg-secondary: #0f172a;
    --bg-card: rgba(22, 30, 49, 0.6);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-cyan: #06b6d4;
    --accent-blue: #3b82f6;
    --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --bg-gradient: radial-gradient(circle at 50% 50%, #1e293b 0%, #080c16 100%);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --terminal-bg: #090d16;
    --terminal-input-bg: #111827;
}

body.light-theme {
    /* Light Theme Variables */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.8);
    --border-color: rgba(0, 0, 0, 0.08);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-cyan: #0891b2;
    --accent-blue: #2563eb;
    --accent-gradient: linear-gradient(135deg, #0891b2 0%, #2563eb 100%);
    --bg-gradient: radial-gradient(circle at 50% 50%, #f1f5f9 0%, #e2e8f0 100%);
    --shadow: 0 8px 32px 0 rgba(15, 23, 42, 0.08);
    --terminal-bg: #1e293b;
    --terminal-input-bg: #0f172a;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color 0.5s ease, color 0.5s ease;
    line-height: 1.6;
}

/* Background Decorations */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -2;
    pointer-events: none;
}

body.light-theme .bg-grid {
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.02) 1px, transparent 1px);
}

.bg-radial {
    position: fixed;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    background: var(--bg-gradient);
    z-index: -3;
    pointer-events: none;
}

/* Common Layout Components */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    font-family: var(--font-sans);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(6, 182, 212, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
}

body.light-theme .btn-secondary:hover {
    background: rgba(0, 0, 0, 0.03);
}

.btn-icon {
    width: 18px;
    height: 18px;
}

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

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(8, 12, 22, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    transition: var(--transition);
}

body.light-theme .header {
    background-color: rgba(248, 250, 252, 0.7);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
    font-family: var(--font-sans);
}

.logo-accent {
    color: var(--accent-cyan);
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.25rem 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-btn, .mobile-menu-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.theme-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(255, 255, 255, 0.05);
}

body.light-theme .theme-btn:hover {
    background: rgba(0, 0, 0, 0.03);
}

.sun-icon {
    display: block;
    width: 20px;
    height: 20px;
}

.moon-icon {
    display: none;
    width: 20px;
    height: 20px;
}

body.light-theme .sun-icon {
    display: none;
}

body.light-theme .moon-icon {
    display: block;
}

.mobile-menu-btn {
    display: none;
}

/* Hero Section */
.hero-section {
    padding-top: 9rem;
    padding-bottom: 4rem;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.hero-left, .hero-right {
    min-width: 0;
}

.status-badge {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.6rem;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    color: var(--accent-cyan);
    padding: 0.4rem 1rem;
    border-radius: 16px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    max-width: 100%;
    white-space: normal;
    word-break: break-word;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 6px rgba(6, 182, 212, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(6, 182, 212, 0);
    }
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.quick-contact {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

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

.contact-icon {
    width: 18px;
    height: 18px;
}

/* Hero Right: Code Visual Card */
.hero-visual-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: var(--transition);
    max-width: 100%;
    overflow: hidden;
}

.hero-visual-card:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.terminal-dots {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background-color: #ef4444; }
.dot.yellow { background-color: #f59e0b; }
.dot.green { background-color: #10b981; }

.code-editor {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 100%;
    overflow-x: auto;
}

.code-line {
    display: flex;
    gap: 1rem;
}

.line-num {
    color: rgba(255, 255, 255, 0.2);
    text-align: right;
    width: 20px;
    user-select: none;
}

body.light-theme .line-num {
    color: rgba(0, 0, 0, 0.3);
}

.keyword { color: #f472b6; }
.string { color: #34d399; }
.boolean { color: #fbbf24; }

body.light-theme .keyword { color: #d01716; }
body.light-theme .string { color: #0f8558; }
body.light-theme .boolean { color: #a05e00; }

/* Interactive Terminal Section */
.terminal-container {
    background-color: var(--terminal-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 480px;
}

.terminal-header {
    background-color: rgba(0, 0, 0, 0.25);
    padding: 0.8rem 1.5rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-left: 1.5rem;
}

.terminal-body {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.terminal-row {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.terminal-user-input {
    color: var(--accent-cyan);
    font-weight: bold;
}

.terminal-response {
    color: var(--text-primary);
    white-space: pre-wrap;
}

.terminal-quick-actions {
    background-color: rgba(0, 0, 0, 0.15);
    padding: 0.8rem 1.5rem;
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    border-top: 1px solid var(--border-color);
}

.terminal-cmd-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.terminal-cmd-btn:hover {
    background: var(--accent-cyan);
    color: #ffffff;
    border-color: var(--accent-cyan);
}

body.light-theme .terminal-cmd-btn {
    background: rgba(0, 0, 0, 0.05);
}

.terminal-input-row {
    background-color: var(--terminal-input-bg);
    padding: 0.8rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    border-top: 1px solid var(--border-color);
}

.terminal-prompt {
    color: #10b981;
    font-family: var(--font-mono);
    font-weight: bold;
    user-select: none;
}

#terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #ffffff;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

body.light-theme #terminal-input {
    color: #ffffff;
}

.terminal-btn-send {
    background: transparent;
    border: none;
    color: var(--accent-cyan);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    transition: var(--transition);
}

.terminal-btn-send:hover {
    transform: scale(1.1);
    color: #ffffff;
}

/* Skills Section */
.skills-filter-container {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-label {
    align-self: center;
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-right: 0.5rem;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    border-color: var(--accent-cyan);
    color: var(--text-primary);
    background: rgba(6, 182, 212, 0.1);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

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

.skill-category:hover {
    border-color: rgba(6, 182, 212, 0.3);
    transform: translateY(-3px);
}

.skill-category h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    border-left: 3px solid var(--accent-cyan);
    padding-left: 0.8rem;
}

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

.skill-tag {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

body.light-theme .skill-tag {
    background: rgba(0, 0, 0, 0.02);
}

.skill-tag:hover {
    background: var(--accent-gradient);
    color: #ffffff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.2);
}

/* Highlight styles applied via JS filter */
.skill-category.faded {
    opacity: 0.3;
    transform: scale(0.98);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: rgba(6, 182, 212, 0.4);
    transform: translateY(-5px);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.project-role {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    letter-spacing: 0.05em;
}

.project-links a {
    color: var(--text-secondary);
    transition: var(--transition);
}

.project-links a:hover {
    color: var(--accent-cyan);
}

.project-links svg {
    width: 20px;
    height: 20px;
}

.project-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

.project-bullets {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    line-height: 1.5;
}

.bullet-item {
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
}

.bullet-icon {
    width: 16px;
    height: 16px;
    color: var(--accent-cyan);
    flex-shrink: 0;
    margin-top: 0.15rem;
}

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

.project-tags span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    color: var(--text-secondary);
}

body.light-theme .project-tags span {
    background: rgba(0, 0, 0, 0.04);
}

/* Experience & Education Section */
.timeline-wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
}

.column-title {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.6rem;
    margin-bottom: 3rem;
}

.col-title-icon {
    width: 28px;
    height: 28px;
    color: var(--accent-cyan);
}

.timeline {
    position: relative;
    border-left: 2px solid var(--border-color);
    padding-left: 2rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.timeline-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    position: relative;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.timeline-card:hover {
    border-color: rgba(6, 182, 212, 0.3);
}

.timeline-dot {
    position: absolute;
    left: -2.7rem;
    top: 2.2rem;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--accent-cyan);
    border: 4px solid var(--bg-primary);
    transition: var(--transition);
    z-index: 2;
}

.timeline-card:hover .timeline-dot {
    transform: scale(1.3);
    background-color: var(--text-primary);
    box-shadow: 0 0 10px var(--accent-cyan);
}

.card-time {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.card-org {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1rem;
    opacity: 0.9;
}

.card-summary {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.card-details {
    display: none;
    margin-top: 1.2rem;
    padding-top: 1.2rem;
    border-top: 1px solid var(--border-color);
    animation: slideDown 0.3s ease-out forwards;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card-details ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.card-details li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.2rem;
}

.card-details li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
}

.timeline-toggle-btn {
    background: transparent;
    border: none;
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    margin-top: 1.2rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: var(--transition);
}

.timeline-toggle-btn:hover {
    color: var(--text-primary);
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 4rem;
}

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

.contact-info-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-info-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 2.5rem;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.info-item {
    display: flex;
    gap: 1.2rem;
    align-items: center;
}

.info-icon {
    width: 48px;
    height: 48px;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

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

.info-content {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    font-weight: 600;
}

.info-value {
    font-size: 1.05rem;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.info-value:hover {
    color: var(--accent-cyan);
}

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

.contact-form-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.8rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

body.light-theme .form-group input, body.light-theme .form-group textarea {
    background: rgba(0, 0, 0, 0.02);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

body.light-theme .form-group input:focus, body.light-theme .form-group textarea:focus {
    background: rgba(0, 0, 0, 0.01);
}

.form-feedback {
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 0.5rem;
    display: none;
}

.form-feedback.success {
    color: #10b981;
    display: block;
}

.form-feedback.error {
    color: #ef4444;
    display: block;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    background: rgba(8, 12, 22, 0.8);
}

body.light-theme .footer {
    background: #f1f5f9;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copy, .footer-design {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .hero-visual-card {
        transform: none;
        max-width: 500px;
        margin: 0 auto;
    }
    .hero-visual-card:hover {
        transform: none;
    }
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .timeline-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    .skills-grid {
        grid-template-columns: 1fr;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    
    /* Navigation Hamburger Menu */
    .mobile-menu-btn {
        display: flex;
    }
    .nav {
        position: fixed;
        top: 4.5rem;
        left: 0;
        width: 100%;
        background-color: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        display: none;
        box-shadow: var(--shadow);
        max-height: calc(100vh - 4.5rem);
        overflow-y: auto;
    }
    .nav.show {
        display: flex;
    }
    
    /* Responsive Text & Layout Tweaks */
    .hero-title {
        font-size: 2.8rem;
    }
    .hero-subtitle {
        font-size: 1.4rem;
    }
    .section-title {
        font-size: 2rem;
    }
    .skill-category {
        padding: 1.5rem;
    }
    .project-card {
        padding: 1.5rem;
    }
    .timeline-card {
        padding: 1.5rem;
    }
    .contact-info-card, .contact-form-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px; /* Slightly reduce base font size to fit content */
    }
    .container {
        padding: 0 1rem;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .hero-actions {
        flex-direction: column;
        width: 100%;
        gap: 0.8rem;
        align-items: stretch;
    }
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
        box-sizing: border-box;
    }
    .quick-contact {
        gap: 1rem;
        flex-direction: column;
    }
    .terminal-container {
        height: 420px;
    }
    .terminal-body {
        padding: 1rem;
        font-size: 0.85rem;
        gap: 1rem;
    }
    .terminal-quick-actions {
        padding: 0.6rem 1rem;
        gap: 0.5rem;
    }
    .terminal-cmd-btn {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    .terminal-input-row {
        padding: 0.6rem 1rem;
        gap: 0.5rem;
    }
    .terminal-prompt {
        font-size: 0.8rem;
    }
    #terminal-input {
        font-size: 0.85rem;
    }
    .timeline {
        padding-left: 1.2rem;
        gap: 2rem;
    }
    .timeline-card {
        padding: 1.2rem;
    }
    .timeline-dot {
        left: -1.7rem;
        width: 10px;
        height: 10px;
        top: 1.8rem;
        border-width: 2px;
    }
    .column-title {
        font-size: 1.3rem;
        margin-bottom: 2rem;
    }
}