/* ========== Critical CSS ========== */
body { margin:0; padding:0; font-family: Tahoma, sans-serif; visibility: visible; opacity:1; }
.navbar, .hero-slider, .grade-grid { opacity:1; }
.container { max-width:1300px; margin:0 auto; padding:0 1.5rem; }

/* ========== تعریف فونت ========== */
@font-face {
    font-family: 'CustomFont';
    src: url('/assets/fonts/font.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
    size-adjust: 100%;
    ascent-override: 90%;
    descent-override: 20%;
    line-gap-override: 0%;
}

/* ========== متغیرهای CSS ========== */
:root {
    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --text-primary: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-pink: #EC4899;
    --radius-lg: 24px;
    --radius-md: 16px;
    --primary-light: #10b981;
    --primary-dark: #3b82f6;
    --primary-soft: #34d399;
}

body.dark-mode {
    --bg-white: #1e293b;
    --bg-light: #0f172a;
    --text-primary: #e2e8f0;
    --text-muted: #94a3b8;
    --border-color: #334155;
}

/* ========== استایل‌های پایه ========== */
* { margin:0; padding:0; box-sizing:border-box; }
body {
    font-family: 'CustomFont', Tahoma, sans-serif;
    background: linear-gradient(145deg, #f5f7fc 0%, #e9eef5 100%);
    color: #1e293b;
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
}
body.dark-mode {
    background: #0f172a;
    color: #e2e8f0;
}

/* ========== Accessibility: فوکوس کیبورد ========== */
*:focus-visible {
    outline: 3px solid #3b82f6 !important;
    outline-offset: 2px !important;
    border-radius: 4px;
}

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

/* ========== Accessibility: اسکیپ لینک ========== */
.skip-link {
    position: fixed;
    top: -100vh;
    left: 50%;
    transform: translateX(-50%);
    background: #0a0a0a;
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 0 0 12px 12px;
    font-weight: 700;
    z-index: 99999;
    text-decoration: none;
}
.skip-link:focus-visible {
    top: 0;
}

/* ========== نوار ناوبری ========== */
.navbar {
    background: #ffffff;
    padding: 0.7rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 1000;
}
body.dark-mode .navbar {
    background: #1e293b;
    border-bottom-color: #334155;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.logo {
    font-size: 1.6rem;
    font-weight: 800;
    text-decoration: none;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.logo:hover { transform: scale(1.02); }

/* ====== دکمه‌های موبایل ====== */
button.mobile-menu-toggle,
button.mobile-search-btn {
    background: none;
    border: none;
    font-size: 1.4rem;
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 50%;
    transition: none;
}
button.mobile-menu-toggle i,
button.mobile-search-btn i {
    background: linear-gradient(135deg, #10b981, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-size: 1.4rem;
}
body.dark-mode button.mobile-menu-toggle i,
body.dark-mode button.mobile-search-btn i {
    background: linear-gradient(135deg, #6ee7b7, #60a5fa);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

button.mobile-dark-toggle {
    display: inline-flex;
    background: none;
    border: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-dark);
    cursor: pointer;
    border-radius: 50%;
}
button.mobile-dark-toggle i {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ====== لینک سبد خرید موبایل ====== */
.right-group a.mobile-cart {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #6ee7b7, #60a5fa);
    border: none;
    border-radius: 50%;
    padding: 0;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: bold;
    transition: none;
}
.right-group a.mobile-cart i {
    font-size: 1.2rem;
    color: white;
    margin: 0;
}
.right-group a.mobile-cart .badge {
    display: none;
}
body.dark-mode .right-group a.mobile-cart {
    background: linear-gradient(135deg, #34d399, #3b82f6);
}

/* ====== منوی موبایل ====== */
.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    left: auto;
    bottom: 0;
    width: 85vw;
    max-width: 85vw;
    height: 100vh;
    background: #ffffff;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    box-shadow: -10px 0 40px rgba(0,0,0,0.15);
    border-left: 1px solid rgba(16,185,129,0.15);
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.2s ease, opacity 0.2s ease, visibility 0.2s ease;
    overflow-y: auto;
    border-radius: 0 0 0 16px;
    will-change: transform, opacity;
}
.mobile-nav.show {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
}
body.dark-mode .mobile-nav {
    background: #1e293b;
    box-shadow: -10px 0 40px rgba(0,0,0,0.5);
    border-left: 1px solid rgba(52, 211, 153, 0.2);
}
.mobile-nav a,
.mobile-nav button {
    display: flex;
    align-items: center;
    gap: 14px;
    width: calc(100% - 32px);
    margin: 8px 16px;
    padding: 1rem 1.2rem;
    text-align: right;
    font-size: 1.05rem;
    color: #1e293b;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    justify-content: flex-start;
    transition: background-color 0.2s ease;
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
    letter-spacing: -0.2px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}
.mobile-nav a:hover,
.mobile-nav button:hover {
    background: #e2e8f0;
    color: #1e293b;
}
body.dark-mode .mobile-nav a,
body.dark-mode .mobile-nav button {
    color: #e2e8f0;
    background: #0f172a;
    border-color: #334155;
}
body.dark-mode .mobile-nav a:hover,
body.dark-mode .mobile-nav button:hover {
    background: #1e293b;
    color: #e2e8f0;
}
.mobile-nav a i,
.mobile-nav button i {
    background: linear-gradient(135deg, #10b981, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-size: 1.2rem;
    min-width: 28px;
    text-align: center;
}
body.dark-mode .mobile-nav a i,
body.dark-mode .mobile-nav button i {
    background: linear-gradient(135deg, #6ee7b7, #60a5fa);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.mobile-nav::before {
    content: '';
    display: block;
    height: 6px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary-dark), var(--primary-light));
    border-radius: 0 0 10px 10px;
    margin-bottom: 8px;
}

/* دکمه سوییچ منو */
button.menu-switch-btn {
    background: linear-gradient(135deg, #10b981, #3b82f6);
    color: white;
    border: none;
    margin: 8px 16px;
    width: calc(100% - 32px);
    border-radius: 30px;
    justify-content: center;
    gap: 8px;
    font-weight: bold;
    cursor: pointer;
    text-align: center;
    padding: 0.8rem 1rem;
}
button.menu-switch-btn i {
    background: linear-gradient(135deg, #10b981, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-size: 1.1rem;
}
body.dark-mode button.menu-switch-btn i {
    background: linear-gradient(135deg, #6ee7b7, #60a5fa);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
button.menu-switch-btn:hover {
    transform: scale(0.98);
    background: linear-gradient(135deg, #0d9668, #2e6ed1);
}
.menu-general.hide, .menu-admin.hide {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
    position: absolute;
    width: 100%;
}
.menu-general.show, .menu-admin.show {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

/* ====== اورلی جستجوی موبایل (شیشه‌ای بی‌رنگ) ====== */
.mobile-search-form {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;               /* هیچ رنگی نداره */
    backdrop-filter: blur(8px);            /* فقط افکت بلور */
    -webkit-backdrop-filter: blur(8px);
    z-index: 1200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}
.mobile-search-form.active {
    display: flex;
}
.mobile-search-form form {
    background: #ffffff;
    padding: 2rem 1.5rem;
    border-radius: 24px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.mobile-search-form input {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border-radius: 50px;
    border: 1px solid #cbd5e1;
    font-size: 1rem;
    font-family: 'CustomFont', sans-serif;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.mobile-search-form input:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(16,185,129,0.2);
}
body.dark-mode .mobile-search-form {
    background: transparent;               /* هیچ رنگی نداره */
}
body.dark-mode .mobile-search-form form {
    background: #1e293b;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}
body.dark-mode .mobile-search-form input {
    background: #0f172a;
    border-color: #475569;
    color: #f1f5f9;
}

/* ====== دسکتاپ ====== */
@media (min-width: 769px) {
    .left-group, .right-group, .mobile-cart, .mobile-dark-toggle,
    .mobile-search-btn, .mobile-menu-toggle, .mobile-search-form,
    .admin-mobile-btn, .user-mobile-btn, .mobile-cart-hero,
    .mobile-menu-wrapper, .mobile-nav {
        display: none;
    }

    .navbar {
        display: flex;
        flex-wrap: nowrap;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
        padding: 0.7rem 2rem;
    }

    .logo {
        order: 1;
        font-size: 1.8rem;
    }

    .desktop-search-form {
        order: 2;
        flex-grow: 1;
        max-width: 500px;
        margin: 0 2rem;
    }

    .nav-links {
        order: 3;
        display: flex;
        align-items: center;
        gap: 1.5rem;
    }

    .cart-btn {
        order: 4;
        margin-left: 0;
    }

    .dark-toggle {
        order: 5;
        margin-left: 0.5rem;
    }

    .nav-links a,
    .nav-links button {
        color: #1e293b;
        text-decoration: none;
        font-weight: 500;
        font-size: 0.95rem;
        transition: all 0.2s;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0.5rem 0.8rem;
        border-radius: 8px;
    }
    .nav-links a:hover,
    .nav-links button:hover {
        background: #f1f5f9;
        color: var(--primary-dark);
    }
    .nav-links a i,
    .nav-links button i {
        background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        font-size: 1rem;
    }
    body.dark-mode .nav-links a,
    body.dark-mode .nav-links button {
        color: #e2e8f0;
    }
    body.dark-mode .nav-links a:hover,
    body.dark-mode .nav-links button:hover {
        background: #334155;
    }
    body.dark-mode .nav-links a i,
    body.dark-mode .nav-links button i {
        background: linear-gradient(135deg, #6ee7b7, #60a5fa);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }

    .cart-btn {
        background: #f8fafc;
        border: 1px solid var(--primary-light);
        color: #1d4ed8;
        padding: 0.5rem 1.2rem;
        border-radius: 40px;
        text-decoration: none;
        font-weight: bold;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        transition: 0.2s;
    }
    .cart-btn i {
        color: #1d4ed8;
        font-size: 1rem;
    }
    .cart-btn:hover {
        background: #ecfdf5;
        border-color: var(--primary-dark);
        transform: translateY(-1px);
    }
    .badge {
        background: #ef4444;
        padding: 0.15rem 0.5rem;
        border-radius: 30px;
        font-size: 0.7rem;
        color: white;
    }
    .user-dropdown {
        position: relative;
        display: inline-block;
    }
    .user-btn {
        background: #f1f5f9;
        border: 1px solid #e2e8f0;
        border-radius: 40px;
        padding: 0.45rem 1rem;
        display: inline-flex;
        align-items: center;
        gap: 8px;
        cursor: pointer;
        font-weight: 500;
        color: #1e293b;
        transition: 0.2s;
    }
    .user-btn:hover { background: #e2e8f0; }
    .dropdown-menu {
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(8px);
        border-radius: 24px;
        min-width: 220px;
        box-shadow: 0 20px 35px -8px rgba(0,0,0,0.15);
        border: 1px solid #e2e8f0;
        z-index: 200;
        padding: 0.4rem 0;
        opacity: 0;
        visibility: hidden;
        transform: scale(0.96) translateY(-8px);
        transition: opacity 0.25s ease, visibility 0.25s, transform 0.25s;
        transform-origin: top right;
    }
    .dropdown-menu.show {
        opacity: 1;
        visibility: visible;
        transform: scale(1) translateY(0);
    }
    .dropdown-menu a {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 0.55rem 1rem;
        color: #1e293b;
        text-decoration: none;
        font-size: 0.85rem;
        transition: all 0.2s;
    }
    .dropdown-menu a:hover {
        background: #f8fafc;
        color: var(--primary-dark);
        padding-right: 1.2rem;
    }
    .desktop-search-form {
        position: relative;
    }
    .desktop-search-form input {
        width: 100%;
        padding: 0.55rem 1rem 0.55rem 2.5rem;
        border-radius: 50px;
        border: 1px solid #cbd5e1;
        background: #f8fafc;
        font-family: 'CustomFont', sans-serif;
        font-size: 0.9rem;
        transition: 0.2s;
    }
    .desktop-search-form input:focus,
    .desktop-search-form input:hover {
        outline: none;
        border-color: var(--primary-light);
        box-shadow: 0 0 0 2px rgba(16,185,129,0.2);
        background: white;
    }
    .desktop-search-form button {
        position: absolute;
        left: 12px;
        top: 50%;
        transform: translateY(-50%);
        background: none;
        border: none;
        font-size: 1rem;
        cursor: pointer;
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .desktop-search-form button i {
        background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }
    .dark-toggle {
        background: none;
        border: none;
        cursor: pointer;
        font-size: 1.2rem;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--text-primary);
        width: 44px;
        height: 44px;
        border-radius: 50%;
    }
    .dark-toggle:hover {
        background: #f1f5f9;
    }
    .dark-toggle i {
        background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }
}

/* ====== موبایل (عرض ≤ 768px) ====== */
@media (max-width: 768px) {
    .navbar {
        position: fixed;
        top: 8px;
        left: 8px;
        right: 8px;
        width: auto;
        z-index: 1000;
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 0.6rem 1.2rem;
        flex-wrap: nowrap;
        background: rgba(255, 255, 255, 0.7);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        border-radius: 30px;
        border: 1px solid rgba(255,255,255,0.3);
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    }
    body { padding-top: 80px; }
    .navbar > .cart-btn,
    .navbar > .desktop-search-form,
    .navbar > .nav-links,
    .navbar > .dark-toggle { display: none; }
    .navbar .logo { font-size: 1.3rem; margin: 0; order: 2; white-space: nowrap; }
    .left-group { display: flex; align-items: center; gap: 0.5rem; order: 1; }
    .right-group { display: flex; align-items: center; gap: 0.4rem; order: 3; }
    .mobile-menu-wrapper { display: inline-block; }
    body.dark-mode .navbar {
        background: rgba(30, 41, 59, 0.7);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        border: 1px solid rgba(255,255,255,0.1);
    }
}