/**
 * New Visionz — Main Stylesheet
 * Dark navy + amber palette with light-mode toggle.
 */

/* ---------- CSS Variables ---------- */
:root {
    --bg: #0b1120;
    --surface: #111827;
    --surface-2: #1f2937;
    --text: #e5e7eb;
    --text-muted: #9ca3af;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --accent-warm: #f59e0b;
    --accent-warm-hover: #d97706;
    --link: #7dd3fc;
    --link-hover: #38bdf8;
    --border: #374151;
    --shadow: rgba(0,0,0,0.6);
    --header-bg: #0f172a;
    --footer-bg: #0f172a;
    --btn-text: #0b1120;
    --input-bg: #1f2937;
    --input-border: #374151;
    --radius: 0.5rem;
    --max-width: 1200px;
    --nav-height: 64px;
}

[data-theme="light"] {
    --bg: #f8fafc;
    --surface: #ffffff;
    --surface-2: #f1f5f9;
    --text: #1e293b;
    --text-muted: #64748b;
    --accent: #0284c7;
    --accent-hover: #0369a1;
    --accent-warm: #d97706;
    --accent-warm-hover: #b45309;
    --link: #0369a1;
    --link-hover: #0284c7;
    --border: #cbd5e1;
    --shadow: rgba(0,0,0,0.12);
    --header-bg: #ffffff;
    --footer-bg: #f1f5f9;
    --btn-text: #ffffff;
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a {
    color: var(--link);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* ---------- Container ---------- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ---------- Header & Nav ---------- */
.site-header {
    background: var(--header-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--nav-height);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-warm);
    letter-spacing: -0.02em;
    text-shadow: 0 1px 4px rgba(245,158,11,0.25);
}

.brand span {
    color: var(--accent-warm);
    font-style: italic;
}

.main-nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.main-nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--accent);
    text-decoration: none;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Theme toggle button */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text);
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
    background: var(--surface-2);
    border-color: var(--accent);
}

/* Mobile menu button */
.menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: currentColor;
    transition: transform 0.3s, opacity 0.3s;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Main Content ---------- */
.site-main {
    flex: 1;
    padding: 2rem 0;
}

/* ---------- Hero ---------- */
.hero {
    text-align: center;
    padding: 3rem 1rem 2.5rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-warm), var(--accent), var(--accent-warm), transparent);
    background-size: 200% 100%;
    animation: glow-sweep 3s linear infinite;
}

@keyframes glow-sweep {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.hero h1 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 0.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.hero h1 em {
    color: var(--accent-warm);
    font-style: normal;
    text-shadow: 0 0 18px rgba(245,158,11,0.35), 0 2px 8px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 640px;
    margin: 0 auto 1.5rem;
}

.cta-group {
    display: inline-flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, background 0.2s;
    border: 2px solid transparent;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-1px);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent-warm);
    color: var(--btn-text);
    border-color: var(--accent-warm);
}

.btn-primary:hover {
    background: var(--accent-warm-hover);
    border-color: var(--accent-warm-hover);
    color: var(--btn-text);
    box-shadow: 0 6px 20px rgba(245,158,11,0.28);
}

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

.btn-secondary:hover {
    background: var(--accent);
    color: var(--btn-text);
    box-shadow: 0 6px 20px rgba(56,189,248,0.25);
}

/* ---------- Cards ---------- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-warm), var(--accent), var(--accent-warm), transparent);
    background-size: 200% 100%;
    animation: glow-sweep 3s linear infinite;
    opacity: 0.6;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px var(--shadow), 0 0 0 1px rgba(56,189,248,0.15);
    border-color: var(--accent);
}

.card h3 {
    font-size: 1.1rem;
    color: var(--accent-warm);
    margin-bottom: 0.5rem;
    text-shadow: 0 1px 4px rgba(245,158,11,0.18);
}

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

/* ---------- Portfolio Grid ---------- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.portfolio-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.portfolio-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px var(--shadow);
}

.portfolio-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 1px solid var(--border);
}

.portfolio-item figcaption {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ---------- Modal Slideshow ---------- */
.modal-slideshow-controls {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 0.75rem;
}

.modal-slideshow-controls.visible {
    display: flex;
}

.modal-slideshow-controls button {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: background 0.2s, border-color 0.2s;
}

.modal-slideshow-controls button:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--btn-text);
}

#modal-counter {
    font-size: 0.9rem;
    color: var(--text-muted);
    min-width: 3rem;
    text-align: center;
}

/* ---------- Modal ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    padding: 1rem;
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    position: relative;
    padding: 1rem;
    display: flex;
    flex-direction: column;
}

.modal-content img {
    width: 100%;
    height: auto;
    max-height: calc(90vh - 140px);
    object-fit: contain;
    border-radius: var(--radius);
    flex-shrink: 1;
}

.modal-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, border-color 0.2s;
}

.modal-close:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--btn-text);
}

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    background: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--input-border);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(56,189,248,0.15);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

.form-error {
    color: #ef4444;
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.form-success {
    background: var(--surface-2);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

/* ---------- Footer ---------- */
.footer-watermark {
    text-align: center;
    margin: 0.5rem 0 1rem;
    opacity: 0.35;
}

.footer-watermark svg {
    fill: currentColor;
    color: var(--accent);
}

.dev-signature {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    margin: 1rem 0 0.5rem;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--text-muted);
    position: relative;
    overflow: hidden;
    text-align: left;
}

.dev-signature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent-warm);
}

.dev-signature code {
    color: var(--accent);
    background: transparent;
    padding: 0;
}

.footer-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1rem 0;
    opacity: 0.5;
}

.site-footer {
    background: var(--footer-bg);
    border-top: 1px solid var(--border);
    padding: 1.5rem 0;
    margin-top: auto;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.site-footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.site-footer p {
    margin-bottom: 0.25rem;
}

.site-footer a {
    color: var(--text-muted);
    text-decoration: underline;
}

.site-footer a:hover {
    color: var(--link);
}

.site-footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.site-footer p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.site-footer a {
    color: var(--text-muted);
}

.site-footer a:hover {
    color: var(--accent);
}

/* ---------- Typography ---------- */
.page-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text);
    text-shadow: 0 1px 6px rgba(0,0,0,0.3);
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    max-width: 720px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 2rem 0 1rem;
    color: var(--accent);
    text-shadow: 0 1px 6px rgba(0,0,0,0.3);
}

.lead {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

/* ---------- Contact Info Box ---------- */
.contact-info {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-info p {
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.contact-info strong {
    color: var(--text);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        inset: var(--nav-height) 0 0 0;
        background: var(--header-bg);
        flex-direction: column;
        align-items: flex-start;
        padding: 1.5rem;
        gap: 1rem;
        border-top: 1px solid var(--border);
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }

    .main-nav.open {
        transform: translateX(0);
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .site-footer .container {
        flex-direction: column;
        text-align: center;
    }
}