/* ============================================================
   متغیرها و ریست
   ============================================================ */
:root {
    --bg-body: #f0f0f5;
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-input: rgba(255, 255, 255, 0.5);
    --text-primary: #1e293b;
    --text-secondary: #2d1b3d;
    --border-color: rgba(255, 255, 255, 0.3);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 16px 48px rgba(82, 0, 92, 0.15);
    --accent: #52005c;
    --secondary: #fcb900;
    --radius: 24px;
    --radius-sm: 14px;
    --transition: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
body.dark-mode {
    --bg-body: #12121f;
    --bg-card: rgba(45, 45, 68, 0.8);
    --bg-input: rgba(58, 58, 85, 0.5);
    --text-primary: #e2e2f0;
    --text-secondary: #c8c8e0;
    --border-color: rgba(68, 68, 102, 0.4);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.7);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
@font-face {
    font-display: swap;
    font-family: 'Estedad';
    src: url('https://zanjan360.ir/wp-content/uploads/2025/12/Estedad-Regular.woff2') format('woff2');
}
body {
    font-family: 'Estedad', 'Tahoma', system-ui, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    padding: 16px;
    min-height: 100vh;
    transition: background var(--transition), color var(--transition);
    position: relative;
}
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background: radial-gradient(circle at 10% 20%, rgba(82,0,92,0.05) 0%, transparent 50%),
                radial-gradient(circle at 90% 80%, rgba(252,185,0,0.05) 0%, transparent 50%);
}
.container { max-width: 1440px; width: 100%; margin: 0 auto; }

/* ===== HEADER ===== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius);
    padding: 16px 28px;
    margin-bottom: 28px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}
.header-left img { height: 64px; width: auto; border-radius: 12px; transition: transform 0.3s; }
.header-left img:hover { transform: scale(1.05); }
.header-center { flex: 2; min-width: 220px; }
.header-center h1 {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--accent), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.header-center h1 i { -webkit-text-fill-color: initial; color: var(--secondary); }
.header-center .sub { font-size: 1rem; color: var(--muted); margin-top: 2px; }
.header-center .badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 6px;
}
.header-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.search-box {
    position: relative;
    min-width: 200px;
}
.search-box input {
    width: 100%;
    padding: 10px 14px 10px 40px;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    background: var(--bg-input);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: 0.3s;
}
.search-box input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(82, 0, 92, 0.1);
}
.search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
}
.theme-toggle {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--text-primary);
    transition: 0.3s;
    backdrop-filter: blur(10px);
}
.theme-toggle:hover { background: var(--secondary); color: #fff; }

/* ===== ناوبری سایت ===== */
.site-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px 16px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 12px 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
}
.site-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 30px;
    transition: 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.site-nav a i { color: var(--secondary); font-size: 1.1rem; }
.site-nav a:hover {
    background: var(--secondary);
    color: #fff;
    transform: translateY(-2px);
}
.site-nav a:hover i { color: #fff; }

/* ===== لینک‌های سریع ===== */
.tool-quick-links {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 10px 20px;
    margin-bottom: 28px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.quick-label {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent);
    white-space: nowrap;
}
.quick-label i { color: var(--secondary); }
.quick-links-scroll {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    flex: 1;
}
.quick-link {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
    transition: 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.quick-link:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 25px rgba(0,0,0,0.2);
}

/* ===== بخش‌های دسته‌بندی ===== */
.category-section {
    margin-bottom: 48px;
    animation: fadeUp 0.8s ease both;
}
.category-section:nth-child(2) { animation-delay: 0.1s; }
.category-section:nth-child(3) { animation-delay: 0.2s; }
.category-section:nth-child(4) { animation-delay: 0.3s; }
.category-section:nth-child(5) { animation-delay: 0.4s; }
.category-section:nth-child(6) { animation-delay: 0.5s; }
.category-section:nth-child(7) { animation-delay: 0.6s; }

@keyframes fadeUp {
    0% { opacity: 0; transform: translateY(40px); }
    100% { opacity: 1; transform: translateY(0); }
}

.category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    margin-bottom: 24px;
    background: var(--cat-gradient);
    border-radius: var(--radius);
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}
.category-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    pointer-events: none;
}
.category-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.25);
    border-radius: 50%;
    font-size: 1.8rem;
    color: #fff;
    flex-shrink: 0;
}
.category-title {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    flex: 1;
}
.category-count {
    background: rgba(255,255,255,0.2);
    padding: 4px 16px;
    border-radius: 30px;
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ===== گرید ===== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ===== کارت‌ها ===== */
.tool-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius);
    padding: 20px 20px 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    scroll-margin-top: 80px;
}
.tool-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-hover);
    border-color: var(--secondary);
}
.tool-header {
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 14px;
    margin-bottom: 14px;
}
.tool-header i {
    font-size: 1.6rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cat-gradient);
    color: #fff;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.tool-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-secondary);
}
.tool-desc {
    font-size: 0.9rem;
    color: var(--muted);
    border-right: 3px solid var(--secondary);
    padding-right: 14px;
    margin-bottom: 14px;
    line-height: 1.7;
}
.tool-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}
.row label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 40px;
}
.row input, .row select, .row textarea {
    flex: 1;
    min-width: 60px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    background: var(--bg-input);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    transition: 0.3s;
    font-family: inherit;
}
.row input:focus, .row select:focus, .row textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(82,0,92,0.08);
}
.btn {
    background: var(--cat-gradient);
    color: #fff;
    border: none;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: inherit;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 25px rgba(0,0,0,0.2);
}
.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    box-shadow: none;
}
.btn-outline:hover {
    background: var(--secondary);
    color: #fff;
    border-color: var(--secondary);
}
.btn-sm { padding: 4px 12px; font-size: 0.8rem; }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===== نتیجه ===== */
.result-box {
    background: var(--bg-input);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    min-height: 44px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px 14px;
    transition: 0.3s;
}
.result-box .label { font-weight: 600; color: var(--text-secondary); }
.result-box .value {
    font-weight: 700;
    color: var(--accent);
    word-break: break-word;
    direction: ltr;
}
.result-box .copy-btn {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 2px 8px;
    border-radius: 6px;
    margin-right: auto;
    transition: 0.3s;
}
.result-box .copy-btn:hover { background: rgba(0,0,0,0.05); }
.result-box .copy-btn.copied { color: var(--secondary); }

/* ============================================================
   تقویم شمسی (اصلاح شده)
   ============================================================ */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    font-size: 0.85rem;
    text-align: center;
    direction: rtl;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    padding: 8px;
    border: 1px solid var(--border-color);
}
.calendar-grid .day-name {
    font-weight: 700;
    color: var(--text-secondary);
    padding: 6px 0;
    font-size: 0.8rem;
    background: var(--icon-bg);
    border-radius: 6px;
}
.calendar-grid .day {
    padding: 8px 0;
    border-radius: 8px;
    background: var(--bg-input);
    transition: 0.2s;
    cursor: default;
    font-weight: 500;
}
.calendar-grid .day.today {
    background: var(--secondary);
    color: #fff;
    font-weight: 700;
    border-radius: 8px;
}
.calendar-grid .day.other-month {
    color: var(--muted);
    opacity: 0.5;
}
.calendar-grid .day:hover:not(.other-month) {
    background: var(--icon-bg);
}

.calendar-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding: 0 4px;
}
.calendar-nav button {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    font-size: 1.1rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px 16px;
    border-radius: 30px;
    transition: 0.3s;
    font-weight: 700;
}
.calendar-nav button:hover {
    background: var(--secondary);
    color: #fff;
    border-color: var(--secondary);
}
.calendar-nav .month-year {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-secondary);
    background: var(--bg-input);
    padding: 4px 16px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
}

/* ============================================================
   ماشین حساب (اصلاح شده)
   ============================================================ */
.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-top: 8px;
}
.calc-grid button {
    padding: 12px 0;
    font-size: 1.1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-input);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    cursor: pointer;
    transition: 0.2s;
    font-weight: 700;
}
.calc-grid button:hover {
    background: var(--secondary);
    color: #fff;
    transform: scale(1.02);
}
.calc-grid .op {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.calc-grid .op:hover {
    background: var(--accent-hover);
}
.calc-grid .eq {
    background: var(--secondary);
    color: #fff;
    grid-column: span 2;
    border-color: var(--secondary);
}
.calc-grid .eq:hover {
    background: var(--secondary-hover);
}
.calc-grid .func {
    background: var(--icon-bg);
    color: var(--text-secondary);
    font-size: 0.85rem;
}
.calc-grid .func:hover {
    background: var(--accent);
    color: #fff;
}

/* ============================================================
   کیبورد فارسی (اصلاح شده)
   ============================================================ */
.keyboard-keys {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    justify-content: center;
    padding: 8px;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}
.key-btn {
    padding: 8px 12px;
    min-width: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: 0.2s;
    font-weight: 600;
    color: var(--text-primary);
}
.key-btn:hover {
    background: var(--secondary);
    color: #fff;
    transform: scale(1.05);
}
.key-btn:active {
    transform: scale(0.95);
}
#keyboardBackspace {
    background: #dc3545;
    color: #fff;
    border-color: #dc3545;
}
#keyboardBackspace:hover {
    background: #c82333;
    color: #fff;
}

/* ============================================================
   شهر
   ============================================================ */
.city-identifier {
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 4px;
}
.city-result {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.8rem;
    padding: 4px 0;
}

/* ============================================================
   QR
   ============================================================ */
#qrcode {
    display: flex;
    justify-content: center;
    padding: 8px 0;
}
#qrcode img,
#qrcode canvas {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
}

/* ============================================================
   شمارش معکوس
   ============================================================ */
.countdown-display {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
    direction: ltr;
    text-align: center;
    letter-spacing: 2px;
    background: var(--bg-input);
    padding: 8px;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
}

/* ============================================================
   شمارشگر کلمات
   ============================================================ */
.counter-row {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.counter-row .result-box {
    flex: 1;
    min-width: 80px;
}

/* ============================================================
   بارکد
   ============================================================ */
#barcodeContainer svg {
    max-width: 100%;
    height: auto;
}

/* ============================================================
   فوتر
   ============================================================ */
.footer {
    text-align: center;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 2px solid var(--border-color);
    color: var(--muted);
    font-size: 0.85rem;
}
.footer a {
    color: var(--accent);
    text-decoration: none;
}
.footer a:hover {
    color: var(--secondary);
}
.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

/* ============================================================
   واکنش‌گرا
   ============================================================ */
@media (max-width: 1024px) {
    .tools-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
    }
    .header-center h1 { justify-content: center; font-size: 1.4rem; }
    .header-actions { justify-content: center; }
    .search-box { width: 100%; min-width: unset; }
    .tools-grid { grid-template-columns: 1fr; }
    .row {
        flex-direction: column;
        align-items: stretch;
    }
    .row label { min-width: unset; }
    .result-box {
        flex-direction: column;
        align-items: flex-start;
    }
    .result-box .copy-btn {
        margin-right: 0;
        align-self: flex-end;
    }
    .category-header {
        flex-wrap: wrap;
        padding: 12px 16px;
    }
    .category-title { font-size: 1.3rem; }
    .site-nav {
        gap: 4px 10px;
        padding: 8px 12px;
    }
    .site-nav a { font-size: 0.8rem; padding: 4px 10px; }
    .tool-quick-links { flex-wrap: wrap; }
    .calendar-grid { font-size: 0.7rem; padding: 4px; gap: 2px; }
    .calendar-grid .day { padding: 4px 0; }
    .calc-grid button { padding: 8px 0; font-size: 0.9rem; }
    .key-btn { padding: 6px 8px; min-width: 28px; font-size: 0.8rem; }
}
@media (max-width: 480px) {
    .header-left img { height: 45px; }
    .header-center h1 { font-size: 1.1rem; }
    .countdown-display { font-size: 1rem; }
}