@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --bg-main: #060911;
    --bg-surface: #0b101d;
    --bg-card: rgba(15, 23, 42, 0.65);
    --bg-card-hover: rgba(20, 30, 55, 0.85);
    --primary: #38bdf8;
    --primary-glow: rgba(56, 189, 248, 0.35);
    --accent: #6366f1;
    --border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Nav */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(6, 9, 17, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #ffffff;
    font-weight: 800;
    font-size: 1.25rem;
}

.logo-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #060911;
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 800;
}

.mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.4rem;
    cursor: pointer;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-menu a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
}

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

/* Hero Section (Desktop) */
.hero-section {
    position: relative !important;
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: 140px 0 80px 0;
    text-align: left;
    overflow: hidden !important;
    background-color: #060911;
    background-image: url('/static/images/hero-bg.jpg') !important;
    background-size: cover !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
}

.hero-section::before {
    content: '';
    position: absolute !important;
    inset: 0 !important;
    background: linear-gradient(90deg, rgba(6, 9, 17, 0.95) 0%, rgba(6, 9, 17, 0.8) 55%, rgba(6, 9, 17, 0.3) 100%),
                linear-gradient(180deg, rgba(6, 9, 17, 0.2) 60%, rgba(6, 9, 17, 1) 100%) !important;
    z-index: 2 !important;
    pointer-events: none !important;
}

.hero-section .container {
    position: relative !important;
    z-index: 3 !important;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    z-index: 2;
    pointer-events: none;
}

/* تصویر پس‌زمینه مخصوص موبایل (در دسکتاپ مخفی است) */
.hero-bg-img {
    display: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--primary);
    margin-bottom: 24px;
    font-weight: 600;
}

.badge-dot {
    width: 7px;
    height: 7px;
    background: var(--primary);
    border-radius: 50%;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.15;
    margin-bottom: 20px;
    color: #ffffff;
    max-width: 750px;
}

.gradient-text {
    background: linear-gradient(90deg, #38bdf8, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    max-width: 620px;
    margin: 0 0 36px 0;
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.65;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    margin-bottom: 45px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 26px;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.25s ease;
}

.btn-primary {
    background: var(--primary);
    color: #060911;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border);
}

/* Tech Stack Bar */
.tech-stack-bar {
    max-width: 960px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(56, 189, 248, 0.4);
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.5);
    padding: 18px 28px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.stack-label {
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #38bdf8;
}

.stack-items {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.stack-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #ffffff;
}

/* Sections & Cards */
.section-padding { padding: 90px 0; }
.bg-surface { background-color: var(--bg-surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-header { margin-bottom: 48px; }
.section-title { font-size: 2rem; font-weight: 800; color: #ffffff; margin-bottom: 8px; }
.section-subtitle { color: var(--text-muted); }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }

.card { 
    background: var(--bg-card); 
    border: 1px solid var(--border); 
    border-radius: 18px; 
    padding: 28px; 
    display: flex; 
    flex-direction: column; 
    justify-content: space-between; 
}

/* چیدمان درست تاریخ و لینک Read Guide در کارت‌ها */
.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.card-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s ease;
}

.card-link:hover {
    gap: 10px;
}

/* استایل و جایگاه استاندارد دکمه کپی در باکس‌های کد */
pre, code, .codehilite, .syntax-block {
    position: relative !important;
}

.copy-btn, button.copy-code, .code-copy-btn {
    position: absolute !important;
    top: 12px !important;
    right: 12px !important;
    background: rgba(56, 189, 248, 0.15) !important;
    color: var(--primary) !important;
    border: 1px solid rgba(56, 189, 248, 0.3) !important;
    padding: 4px 10px !important;
    border-radius: 6px !important;
    font-size: 0.75rem !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 5px !important;
    z-index: 10 !important;
}

.copy-btn:hover, button.copy-code:hover, .code-copy-btn:hover {
    background: var(--primary) !important;
    color: #060911 !important;
}

.about-box { background: linear-gradient(135deg, rgba(15, 23, 42, 0.8), rgba(30, 41, 59, 0.5)); border: 1px solid var(--border); border-radius: 20px; padding: 40px; }
.site-footer { padding: 30px 0; border-top: 1px solid var(--border); background: var(--bg-main); }
.footer-container { display: flex; justify-content: space-between; align-items: center; color: var(--text-dim); font-size: 0.9rem; }

/* Responsive Mobile Fixes */
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .site-header, .nav-container { height: 64px; }
    .mobile-toggle { display: block !important; }
    
    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        background: #0b101d !important;
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        display: none;
        z-index: 999;
        padding: 10px 0;
    }
    .nav-menu.active { display: flex !important; }
    .nav-menu a { padding: 14px 20px; border-bottom: 1px solid rgba(255,255,255,0.05); }

    /* نمایش بی‌نقص و تضمینی عکس پس‌زمینه در موبایل */
    .hero-section {
        position: relative !important;
        min-height: auto !important;
        padding: 110px 0 50px 0 !important;
        background-image: none !important;
        overflow: hidden !important;
    }

    .hero-bg-img {
        display: block !important;
        position: absolute !important;
        top: 0 !important;
        left: 0 !important;
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
        object-position: center !important;
        z-index: 1 !important;
        pointer-events: none !important;
    }

    .hero-section::before {
        content: '' !important;
        position: absolute !important;
        inset: 0 !important;
        background: rgba(6, 9, 17, 0.78) !important;
        z-index: 2 !important;
        pointer-events: none !important;
    }

    .hero-section .container {
        position: relative !important;
        z-index: 3 !important;
    }

    .hero-title {
        font-size: 1.85rem !important;
        line-height: 1.25 !important;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 12px;
    }

    .btn { width: 100%; justify-content: center; }
    .tech-stack-bar { flex-direction: column; align-items: flex-start; padding: 16px; }
    .grid-3 { grid-template-columns: 1fr; }
    .footer-container { flex-direction: column; gap: 16px; text-align: center; }
}