/* Tamoza UI Standard - Verified: 8pt Logic, Premium Glassmorphism, Centered Layout, Indigo Brand DNA, SF Pro & Cairo Typography, Theme Toggle Active, Full Component Set. */

/* ========== CUSTOM PROPERTIES ========== */
:root {
    /* Accent */
    --accent: #6366F1;
    --accent-hover: #4F46E5;
    --accent-active: #4338CA;
    --gradient: linear-gradient(135deg, #6366F1, #22D3EE);

    /* Functional */
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;

    /* Light Mode Surfaces */
    --bg: #F9F9F7;
    --surface: rgba(255, 255, 255, 0.7);
    --border: rgba(0, 0, 0, 0.05);
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-tertiary: #999999;

    /* Shadows */
    --soft-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --accent-glow: 0 4px 14px rgba(99, 102, 241, 0.25);
    --focus-ring: 0 0 0 3px rgba(99, 102, 241, 0.4);

    /* Glass */
    --glass-blur: blur(10px) saturate(140%);

    /* Typography */
    --font-en: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", sans-serif;
    --font-ar: "Cairo", sans-serif;

    /* Spacing */
    --safe-mobile: 16px;
    --safe-desktop: 24px;
    --container-max: 1200px;
    --radius: 16px;
    --radius-lg: 24px;
    --radius-sm: 12px;

    /* Motion */
    --duration: 250ms;
    --duration-micro: 150ms;
    --easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== DARK MODE ========== */
[data-theme="dark"] {
    --bg: #121212;
    --surface: rgba(255, 255, 255, 0.05);
    --border: rgba(255, 255, 255, 0.10);
    --text-primary: #f5f5f5;
    --text-secondary: #a0a0a0;
    --text-tertiary: #666666;
    --soft-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* ========== RESET & BASE ========== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-en);
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    background-color: var(--bg);
    transition: background-color var(--duration) var(--easing),
                color var(--duration) var(--easing);
    padding-top: 120px; /* header height 72px + top gap 24px + breathing 24px */
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

input, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

/* ========== UTILITIES ========== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--safe-desktop);
}

.glass-surface {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--soft-shadow);
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: 48px;
    position: relative;
    color: var(--text-primary);
}

.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

/* ========== FLOATING HEADER ========== */
.floating-header {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    height: 72px;
    z-index: 1000;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--soft-shadow);
    transition: background var(--duration) var(--easing),
                border-color var(--duration) var(--easing),
                box-shadow var(--duration) var(--easing);
}

.header-logo {
    justify-self: start;
}

.logo-text {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.02em;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-title {
    justify-self: center;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-secondary);
}

.header-actions {
    justify-self: end;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Language Toggle */
.lang-toggle {
    height: 40px;
    padding: 0 16px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-ar);
    font-size: 14px;
    font-weight: 600;
    transition: background var(--duration-micro) var(--easing),
                color var(--duration-micro) var(--easing),
                transform var(--duration-micro) var(--easing);
}

.lang-toggle:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent);
    transform: scale(1.05);
}

.lang-toggle:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--duration-micro) var(--easing),
                color var(--duration-micro) var(--easing),
                transform var(--duration-micro) var(--easing);
}

.theme-toggle:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent);
    transform: scale(1.05);
}

.theme-toggle:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.icon-sun {
    display: none;
}

[data-theme="dark"] .icon-moon {
    display: none;
}

[data-theme="dark"] .icon-sun {
    display: block;
}

/* ========== HERO SECTION ========== */
.hero-section {
    padding-top: 32px;
}

.hero-card {
    max-width: 720px;
    margin: 0 auto;
    padding: 64px 48px;
    text-align: center;
}

.avatar-wrapper {
    margin-bottom: 24px;
}

.avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    position: relative;
}

.avatar::before {
    content: '';
    position: absolute;
    inset: 3px;
    border-radius: 50%;
    background: var(--bg);
    transition: background-color var(--duration) var(--easing);
}

.avatar-initials {
    position: relative;
    z-index: 1;
    font-size: 36px;
    font-weight: 600;
    letter-spacing: -0.02em;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-name {
    font-size: 56px;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.hero-role {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--accent);
    margin-bottom: 16px;
}

.hero-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.hero-bio {
    max-width: 520px;
    margin: 0 auto 40px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Stats */
.stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 480px;
    margin: 0 auto 40px;
    padding: 24px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* Buttons */
.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.02em;
    border-radius: var(--radius);
    transition: all var(--duration) var(--easing);
    cursor: pointer;
    text-align: center;
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.btn-primary {
    background: var(--gradient);
    color: #FFFFFF;
    box-shadow: var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: transparent;
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--accent);
}

[data-theme="dark"] .btn-secondary {
    color: #A5B4FC;
    border-color: rgba(165, 180, 252, 0.3);
}

.btn-secondary:hover {
    background: var(--surface);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ========== ABOUT SECTION ========== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-info-card {
    padding: 32px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.info-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.info-row:first-child {
    padding-top: 0;
}

.info-label {
    font-size: 14px;
    color: var(--text-tertiary);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.info-value {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 400;
    text-align: right;
}

.status-open {
    color: var(--success);
    font-weight: 600;
}

/* ========== SKILLS SECTION ========== */
.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 24px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    transition: transform var(--duration) var(--easing),
                box-shadow var(--duration) var(--easing);
    cursor: default;
}

.skill-tag svg {
    color: var(--accent);
    flex-shrink: 0;
}

.skill-tag:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
}

/* ========== PORTFOLIO SECTION ========== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.portfolio-card {
    overflow: hidden;
    transition: transform var(--duration) var(--easing),
                box-shadow var(--duration) var(--easing);
}

.portfolio-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .portfolio-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.card-thumbnail {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius) var(--radius) 0 0;
}

.card-body {
    padding: 24px;
}

.card-body h3 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.card-body p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    font-size: 12px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--accent);
}

/* ========== CONTACT SECTION ========== */
.contact-card {
    max-width: 560px;
    margin: 0 auto;
    padding: 48px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    padding: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: border-color var(--duration-micro) var(--easing),
                box-shadow var(--duration-micro) var(--easing);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: var(--accent-glow);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ========== STRUCTURED FOOTER ========== */
.site-footer {
    background: #0a0a0a;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 24px 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.02em;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-social {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--duration-micro) var(--easing),
                background var(--duration-micro) var(--easing),
                transform var(--duration-micro) var(--easing);
}

.social-link:hover {
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.social-link:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* ========== SCROLL ANIMATIONS ========== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--easing),
                transform 0.6s var(--easing);
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered delays for portfolio cards */
.portfolio-card.animate-on-scroll:nth-child(1) { transition-delay: 0ms; }
.portfolio-card.animate-on-scroll:nth-child(2) { transition-delay: 100ms; }
.portfolio-card.animate-on-scroll:nth-child(3) { transition-delay: 200ms; }

/* ========== RESPONSIVE — TABLET (768px – 1024px) ========== */
@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-name {
        font-size: 44px;
    }
}

/* ========== RESPONSIVE — MOBILE (< 768px) ========== */
@media (max-width: 768px) {
    body {
        padding-top: 96px;
    }

    .floating-header {
        top: 16px;
        width: calc(100% - 32px);
        height: 64px;
        padding: 0 16px;
    }

    .container {
        padding: 0 var(--safe-mobile);
    }

    .section {
        padding: 48px 0;
    }

    .section-title {
        font-size: 28px;
        margin-bottom: 32px;
    }

    /* Hero */
    .hero-card {
        padding: 40px 24px;
    }

    .hero-name {
        font-size: 36px;
    }

    .hero-role {
        font-size: 18px;
    }

    .stats-row {
        gap: 16px;
    }

    .stat-number {
        font-size: 24px;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    /* Portfolio */
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    /* Contact */
    .contact-card {
        padding: 32px 24px;
    }

    /* Footer */
    .footer-inner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    /* Skills */
    .skills-grid {
        gap: 16px;
    }

    .skill-tag {
        padding: 8px 16px;
        font-size: 13px;
    }
}

/* ========== ACCESSIBILITY ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .animate-on-scroll {
        opacity: 1;
        transform: none;
    }
}