/* ===== تنظیمات کلی ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #0f1419;
    --color-bg-alt: #1a2028;
    --color-primary: #2962ff;
    --color-text: #e8eaed;
    --color-text-muted: #9aa0a6;
    --color-border: #2a3139;
    --color-success: #26a69a;
}

body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ===== هدر ===== */
.header {
    background-color: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    padding: 15px 0;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    font-size: 1.5rem;
    color: var(--color-primary);
    font-weight: bold;
}

.nav {
    display: flex;
    gap: 20px;
    flex: 1;
    justify-content: center;
}

.nav-link {
    color: var(--color-text-muted);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-link:hover {
    color: var(--color-text);
    background-color: var(--color-bg);
}

.nav-link.active {
    color: var(--color-primary);
    background-color: rgba(41, 98, 255, 0.1);
}

.lang-btn {
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: opacity 0.2s;
}

.lang-btn:hover {
    opacity: 0.85;
}

/* ===== بخش اصلی ===== */
.main {
    flex: 1;
    padding: 40px 0;
}

.hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, var(--color-bg-alt), var(--color-bg));
    border-radius: 12px;
    margin-bottom: 40px;
}

.hero h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
    color: var(--color-text);
}

.hero p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.hero .note {
    font-size: 0.9rem;
    color: var(--color-success);
    margin-top: 20px;
}

/* ===== کارت‌ها ===== */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.feature-card {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 25px;
    transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--color-text-muted);
}


a.feature-card {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}


/* ===== فوتر ===== */
.footer {
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: 20px 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ===== صفحه‌های داخلی ===== */
.page-header {
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--color-border);
}

.page-header h2 {
    font-size: 1.8rem;
    color: var(--color-text);
}

.chart-container,
.learn-container {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.placeholder {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    text-align: center;
}

/* ===== کانتینر نمودار ===== */
.chart-wrapper {
    position: relative;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 10px;
    min-height: 520px;
}

#chart {
    width: 100%;
    height: 500px;
}

.chart-status {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-text-muted);
    font-size: 1rem;
    background-color: rgba(26, 32, 40, 0.9);
    padding: 10px 20px;
    border-radius: 8px;
    z-index: 10;
}

/* ===== پنل اندیکاتورها ===== */
.indicators-panel {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    padding: 12px 20px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.indicators-header {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: bold;
}

.indicators-list {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.indicator-item {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    color: var(--color-text);
    font-size: 0.95rem;
}

.indicator-item input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

.indicator-tooltip {
    cursor: help;
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ===== پنل RSI ===== */
.rsi-wrapper {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 10px;
    margin-top: 15px;
}

.rsi-header {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    padding: 5px 10px;
    font-weight: bold;
}

#rsiChart {
    width: 100%;
    height: 150px;
}

/* ===== دکمه آموزش اندیکاتور ===== */
.indicator-learn-btn {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-primary);
    padding: 3px 8px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
    margin-inline-start: 4px;
}

.indicator-learn-btn:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* ===== Modal آموزش ===== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: modalFadeIn 0.2s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
    color: var(--color-primary);
    font-size: 1.3rem;
    margin: 0;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.8rem;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s;
}

.modal-close:hover {
    background-color: var(--color-bg);
    color: var(--color-text);
}

.modal-body {
    padding: 25px;
}

.modal-short-desc {
    color: var(--color-text-muted);
    font-style: italic;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--color-border);
}

.modal-section {
    margin-bottom: 20px;
}

.modal-section h4 {
    color: var(--color-success);
    font-size: 1rem;
    margin-bottom: 8px;
}

.modal-section p {
    color: var(--color-text);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ===== نوار ابزار ترسیمی ===== */
.drawing-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.drawing-label {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: bold;
    margin-inline-end: 10px;
}

.draw-btn {
    background-color: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    padding: 7px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-family: inherit;
    transition: all 0.2s;
}

.draw-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.draw-btn.active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.clear-btn:hover {
    border-color: #ef5350;
    color: #ef5350;
}

/* ===== کارت‌های لینک‌دار ===== */
a.feature-card {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}

a.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(41, 98, 255, 0.2);
}

/* ===== صفحه آموزش ===== */
.page-subtitle {
    color: var(--color-text-muted);
    margin-top: 10px;
    font-size: 1rem;
}

.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.lesson-card {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 25px;
    text-decoration: none;
    color: inherit;
    position: relative;
    transition: all 0.25s;
    display: flex;
    flex-direction: column;
}

.lesson-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(41, 98, 255, 0.15);
}

.lesson-number {
    position: absolute;
    top: 15px;
    left: 15px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.95rem;
}

.lesson-card h3 {
    margin: 30px 0 10px 0;
    font-size: 1.15rem;
    color: var(--color-text);
}

.lesson-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    flex: 1;
}

.lesson-status {
    display: block;
    margin-top: 15px;
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: bold;
}

.coming-soon {
    opacity: 0.6;
    cursor: not-allowed;
}

.coming-soon:hover {
    transform: none;
    border-color: var(--color-border);
    box-shadow: none;
}

.coming-soon .lesson-number {
    background-color: var(--color-text-muted);
}

.coming-soon .lesson-status {
    color: var(--color-text-muted);
}