/* ============================================================
   CSS VARIABLES — THEMES (Red & Blue)
   ============================================================ */
:root {
    /* ===== RED THEME ===== */
    --bg-primary: #1a0a0a;
    --bg-secondary: #0d0505;
    --bg-card: rgba(60, 20, 20, 0.35);
    --bg-header: linear-gradient(135deg, #3d0c0c 0%, #6b1a1a 50%, #4a1010 100%);
    --border-color: #8b2a2a;
    --border-light: rgba(180, 60, 60, 0.15);
    --text-primary: #f0e0e0;
    --text-secondary: #d4b8b8;
    --text-muted: #a08080;
    --text-heading: #ffd0d0;
    --text-heading-span: #ff5e5e;
    --badge-bg: rgba(200, 50, 50, 0.2);
    --badge-border: rgba(200, 60, 60, 0.2);
    --btn-primary-bg: linear-gradient(135deg, #8b1a1a, #c0392b);
    --btn-primary-hover: linear-gradient(135deg, #a02020, #d94444);
    --btn-secondary-bg: rgba(255, 255, 255, 0.05);
    --btn-secondary-border: rgba(180, 60, 60, 0.3);
    --shadow-color: rgba(150, 30, 30, 0.2);
    --shadow-strong: rgba(100, 0, 0, 0.4);
    --footer-color: #8a6a6a;
    --footer-border: rgba(180, 60, 60, 0.15);
    --menu-bg: rgba(0, 0, 0, 0.35);
    --menu-border: rgba(200, 80, 80, 0.2);
    --dropdown-bg: #2a0f0f;
    --dropdown-border: rgba(180, 60, 60, 0.3);
    --dropdown-hover: rgba(200, 60, 60, 0.25);
    --toggle-bg: #2a0f0f;
    --toggle-border: rgba(180, 60, 60, 0.3);
    --toggle-dot: #ff5e5e;
    --menu-icon-size: 22px;
    --quick-nav-bg: linear-gradient(180deg, #0d0505, #1a0a0a);
    --page-title-bg: radial-gradient(ellipse at center, #2a0f0f 0%, #0d0505 100%);
}

[data-theme="blue"] {
    --bg-primary: #0a0e1a;
    --bg-secondary: #040812;
    --bg-card: rgba(60, 120, 255, 0.08);
    --bg-header: linear-gradient(135deg, #0f1a2e 0%, #1a2a4a 50%, #0f1a2e 100%);
    --border-color: #3a5a8a;
    --border-light: rgba(60, 120, 255, 0.15);
    --text-primary: #d0d8f0;
    --text-secondary: #a0b0d0;
    --text-muted: #6a7a9a;
    --text-heading: #e0e8ff;
    --text-heading-span: #6a9aff;
    --badge-bg: rgba(60, 120, 255, 0.12);
    --badge-border: rgba(60, 120, 255, 0.2);
    --btn-primary-bg: linear-gradient(135deg, #1a3a6a, #2a5a9a);
    --btn-primary-hover: linear-gradient(135deg, #2a4a7a, #3a6aaa);
    --btn-secondary-bg: rgba(60, 120, 255, 0.05);
    --btn-secondary-border: rgba(60, 120, 255, 0.2);
    --shadow-color: rgba(20, 60, 180, 0.15);
    --shadow-strong: rgba(20, 60, 180, 0.3);
    --footer-color: #5a6a8a;
    --footer-border: rgba(60, 120, 255, 0.08);
    --menu-bg: rgba(0, 0, 0, 0.3);
    --menu-border: rgba(60, 120, 255, 0.1);
    --dropdown-bg: #0f1a30;
    --dropdown-border: rgba(60, 120, 255, 0.2);
    --dropdown-hover: rgba(60, 120, 255, 0.15);
    --toggle-bg: #0a1a2e;
    --toggle-border: rgba(60, 120, 255, 0.2);
    --toggle-dot: #6a9aff;
    --quick-nav-bg: linear-gradient(180deg, #040812, #0a0e1a);
    --page-title-bg: radial-gradient(ellipse at center, #0a1a2e 0%, #040812 100%);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: background 0.4s ease, color 0.3s ease;
    min-height: 100vh;
}

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

/* ============================================================
   THEME TOGGLE BUTTON
   ============================================================ */
.theme-toggle-wrapper {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(0, 0, 0, 0.6);
    padding: 6px 14px 6px 10px;
    border-radius: 30px;
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-light);
}

.theme-toggle {
    width: 44px;
    height: 22px;
    background: var(--toggle-bg);
    border: 2px solid var(--toggle-border);
    border-radius: 30px;
    cursor: pointer;
    position: relative;
    transition: all 0.4s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    flex-shrink: 0;
}

.theme-toggle .dot {
    width: 16px;
    height: 16px;
    background: var(--toggle-dot);
    border-radius: 50%;
    position: absolute;
    top: 1px;
    left: 2px;
    transition: all 0.4s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

[data-theme="blue"] .theme-toggle .dot {
    left: 22px;
}

.theme-label {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: bold;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
    background: var(--bg-header);
    padding: 12px 0 0 0;
    color: var(--text-primary);
    box-shadow: 0 4px 20px var(--shadow-strong);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid var(--border-color);
    transition: all 0.4s ease;
}

.header-content {
    text-align: center;
    padding: 0 20px 8px 20px;
}

.header h1 {
    margin: 0;
    font-size: 32px;
    letter-spacing: 3px;
    color: var(--text-heading);
    text-shadow: 0 0 20px var(--shadow-color);
    transition: color 0.3s ease;
}

.header h1 span {
    color: var(--text-heading-span);
    transition: color 0.3s ease;
}

.header p {
    margin: 4px 0 0 0;
    font-size: 14px;
    opacity: 0.85;
    color: var(--text-secondary);
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.back-link {
    display: inline-block;
    margin-top: 6px;
    padding: 6px 18px;
    background: var(--btn-secondary-bg);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 13px;
    transition: all 0.3s;
    border: 1px solid var(--btn-secondary-border);
}

.back-link:hover {
    background: var(--badge-bg);
    color: var(--text-heading);
    border-color: var(--border-color);
}

/* ============================================================
   MENU
   ============================================================ */
.menu {
    background: var(--menu-bg);
    margin-top: 8px;
    border-top: 1px solid var(--menu-border);
    transition: all 0.3s ease;
}

.menu > ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    padding: 0;
    margin: 0;
}

.menu > ul > li {
    position: relative;
    display: inline-block;
}

.menu > ul > li > .menu-item-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 22px;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
    border-bottom: 2px solid transparent;
}

.menu > ul > li > .menu-item-wrap:hover {
    background: var(--badge-bg);
    border-bottom-color: var(--border-color);
    color: var(--text-heading);
}

.menu > ul > li > .menu-item-wrap a {
    flex: 1;
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.arrow {
    display: inline-block;
    font-size: 12px;
    margin-left: 6px;
    transition: transform 0.3s ease;
    user-select: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 2px 4px;
    border-radius: 4px;
    flex-shrink: 0;
}

.arrow:hover {
    background: rgba(255, 255, 255, 0.05);
}

.arrow.open {
    transform: rotate(180deg);
}

.menu-icon {
    width: var(--menu-icon-size, 22px);
    height: var(--menu-icon-size, 22px);
    vertical-align: middle;
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
}

.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--dropdown-bg);
    min-width: 210px;
    border-radius: 0 0 10px 10px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
    z-index: 1000;
    padding: 0;
    list-style: none;
    border: 1px solid var(--dropdown-border);
    border-top: none;
    transition: background 0.3s ease;
}

.dropdown li {
    display: block;
    border-bottom: 1px solid var(--border-light);
    position: relative;
}

.dropdown li:last-child {
    border-bottom: none;
}

.dropdown .menu-item-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 18px;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
}

.dropdown .menu-item-wrap:hover {
    background: var(--dropdown-hover);
    color: var(--text-heading);
}

.dropdown .menu-item-wrap a {
    flex: 1;
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sub-dropdown {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    background: var(--dropdown-bg);
    min-width: 170px;
    border-radius: 0 10px 10px 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
    padding: 0;
    list-style: none;
    border: 1px solid var(--dropdown-border);
    transition: background 0.3s ease;
}

.sub-dropdown .menu-item-wrap {
    padding: 8px 16px;
    font-size: 12px;
}

.sub-dropdown .menu-item-wrap:hover {
    background: var(--dropdown-hover);
}

.sub-dropdown .menu-item-wrap a {
    display: flex;
    align-items: center;
    gap: 6px;
}

.dropdown.open {
    display: block;
}

.sub-dropdown.open {
    display: block;
}

/* ============================================================
   PAGE TITLE (برای صفحات داخلی)
   ============================================================ */
.page-title {
    text-align: center;
    padding: 40px 20px 25px 20px;
    background: var(--page-title-bg);
    border-bottom: 2px solid var(--border-light);
    transition: all 0.4s ease;
}

.page-title h2 {
    font-size: 36px;
    color: var(--text-heading);
    text-shadow: 0 0 30px var(--shadow-color);
    transition: color 0.3s ease;
}

.page-title h2 span {
    color: var(--text-heading-span);
    transition: color 0.3s ease;
}

.page-title p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-top: 6px;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

/* ============================================================
   CONTENT SECTION (برای صفحات داخلی)
   ============================================================ */
.content-section {
    padding: 40px 20px;
    background: var(--quick-nav-bg);
    max-width: 1200px;
    margin: 0 auto;
    transition: all 0.4s ease;
}

.section-header {
    font-size: 28px;
    color: var(--text-heading);
    text-align: center;
    margin: 0 0 8px 0;
    border-bottom: 2px solid var(--border-light);
    padding-bottom: 10px;
    transition: color 0.3s ease, border-color 0.3s ease;
}

.section-desc {
    text-align: center;
    color: var(--text-muted);
    font-size: 15px;
    margin-bottom: 30px;
    transition: color 0.3s ease;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    text-align: center;
    padding: 25px 20px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--footer-border);
    color: var(--footer-color);
    font-size: 13px;
    letter-spacing: 0.5px;
    transition: all 0.4s ease;
}

.footer span {
    color: var(--text-heading-span);
    transition: color 0.3s ease;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .header {
        padding: 8px 0 0 0;
    }
    .header-content {
        padding: 0 15px 6px 15px;
    }
    .header h1 {
        font-size: 22px !important;
        letter-spacing: 1px !important;
    }
    .header p {
        font-size: 12px !important;
        margin-top: 2px !important;
    }
    .back-link {
        font-size: 11px !important;
        padding: 4px 14px !important;
        margin-top: 4px !important;
    }

    .menu {
        margin-top: 4px !important;
    }
    .menu > ul {
        flex-direction: column;
        align-items: stretch;
    }
    .menu > ul > li {
        width: 100%;
        text-align: left;
    }
    .menu > ul > li > .menu-item-wrap {
        padding: 8px 14px;
        font-size: 13px;
    }
    .menu > ul > li > .menu-item-wrap .arrow {
        font-size: 14px;
        padding: 3px 6px;
        margin-left: 0;
    }

    .dropdown {
        position: static;
        width: 100%;
        border-radius: 0;
        box-shadow: none;
        border: 1px solid var(--border-light);
        border-top: none;
    }
    .sub-dropdown {
        position: static;
        width: 100%;
        border-radius: 0;
        padding-left: 16px;
        box-shadow: none;
        border: 1px solid var(--border-light);
        border-top: none;
    }
    .dropdown .menu-item-wrap {
        padding: 8px 14px;
        font-size: 12px;
    }
    .sub-dropdown .menu-item-wrap {
        padding: 6px 14px 6px 20px;
        font-size: 11px;
    }

    .theme-toggle-wrapper {
        top: 12px;
        right: 12px;
        padding: 4px 10px 4px 8px;
    }
    .theme-toggle {
        width: 36px;
        height: 18px;
    }
    .theme-toggle .dot {
        width: 13px;
        height: 13px;
        top: 1px;
        left: 2px;
    }
    [data-theme="blue"] .theme-toggle .dot {
        left: 18px;
    }
    .theme-label {
        font-size: 10px;
    }

    .page-title h2 {
        font-size: 28px;
    }
    .page-title p {
        font-size: 14px;
    }
    .section-header {
        font-size: 24px;
    }
    .content-section {
        padding: 30px 15px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 18px !important;
        letter-spacing: 1px !important;
    }
    .header p {
        font-size: 10px !important;
    }
    .back-link {
        font-size: 10px !important;
        padding: 3px 12px !important;
    }

    .menu > ul > li > .menu-item-wrap {
        padding: 6px 12px;
        font-size: 12px;
    }
    .dropdown .menu-item-wrap {
        padding: 6px 12px;
        font-size: 11px;
    }
    .sub-dropdown .menu-item-wrap {
        padding: 5px 12px 5px 16px;
        font-size: 10px;
    }

    .page-title h2 {
        font-size: 22px;
    }
    .page-title p {
        font-size: 12px;
    }
    .section-header {
        font-size: 20px;
    }
}