/* ==========================================
   Venus Academy - Complete Stylesheet
   ========================================== */

.tutorials-page {
    background: #f8fafc;
    font-family: 'Vazirmatn', 'Estedad', sans-serif;
}

/* --- Hero Section --- */
.tutorials-hero {
    position: relative;
    overflow: hidden;
    padding: 105px 20px 85px;
    color: #fff;
    background: radial-gradient(circle at 85% 10%, rgba(249, 115, 22, .25), transparent 25%),
    radial-gradient(circle at 10% 80%, rgba(45, 212, 191, .16), transparent 28%),
    linear-gradient(135deg, #0f172a 0%, #0f766e 62%, #115e59 100%);
}

.tutorials-hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: .22;
    background-image: linear-gradient(rgba(255, 255, 255, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .08) 1px, transparent 1px);
    background-size: 42px 42px;
    mask-image: linear-gradient(90deg, #000, transparent);
}

.tutorials-hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.5fr .65fr;
    align-items: center;
    gap: 45px;
}

.tutorials-kicker {
    display: inline-flex;
    margin-bottom: 15px;
    font-size: .75rem;
    letter-spacing: .16em;
    font-weight: 900;
    color: #fdba74;
}

.tutorials-hero h1 {
    font-size: clamp(2.3rem, 5vw, 4.1rem);
    line-height: 1.2;
    margin-bottom: 16px;
}

.tutorials-hero p {
    max-width: 720px;
    line-height: 2;
    color: #dbeafe;
    font-size: 1.03rem;
}

.tutorials-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.tutorials-hero-meta span {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .12);
    font-size: .78rem;
    font-weight: 700;
}

.tutorials-hero-card {
    min-height: 220px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 14px;
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 28px;
    background: rgba(255, 255, 255, .07);
    backdrop-filter: blur(16px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, .18);
    text-align: center;
    padding: 25px;
    font-weight: 800;
}

.hero-card-icon {
    width: 78px;
    height: 78px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #ea580c;
    background: #fff;
    font-size: 1.45rem;
    padding-right: 2px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, .2);
}

/* --- Content & Toolbar --- */
.tutorials-content {
    padding-top: 48px;
}

.tutorial-toolbar {
    display: grid;
    grid-template-columns: minmax(260px, 1fr) auto;
    gap: 15px;
    align-items: center;
    padding: 16px;
    background: rgba(255, 255, 255, .92);
    border: 1px solid rgba(148, 163, 184, .2);
    border-radius: 22px;
    box-shadow: 0 18px 50px rgba(15, 23, 42, .07);
}

.tutorial-search {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 52px;
    padding: 0 15px;
    border-radius: 15px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}

.tutorial-search span {
    color: #94a3b8;
    font-size: 1.35rem;
}

.tutorial-search input {
    width: 100%;
    border: 0;
    outline: 0;
    background: transparent;
    color: #0f172a;
    font: inherit;
}

.tutorial-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tutorial-controls select {
    min-height: 52px;
    min-width: 155px;
    border: 1px solid #e2e8f0;
    border-radius: 15px;
    padding: 0 14px;
    background: #fff;
    color: #334155;
    font: inherit;
    outline: none;
    cursor: pointer;
}

.tutorial-controls select:focus,
.tutorial-search:focus-within {
    border-color: rgba(15, 118, 110, .5);
    box-shadow: 0 0 0 4px rgba(15, 118, 110, .08);
}

.tutorial-stats {
    margin: 20px 0 15px;
    color: #64748b;
    font-size: .88rem;
    font-weight: 700;
}

/* --- Grid & Cards --- */
.tutorial-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.tutorial-card {
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(148, 163, 184, .18);
    border-radius: 24px;
    box-shadow: 0 16px 42px rgba(15, 23, 42, .07);
    transition: transform .28s ease, box-shadow .28s ease;
}

.tutorial-card:hover {
    transform: translateY(-7px);
    box-shadow: 0 25px 60px rgba(15, 23, 42, .12);
}

.tutorial-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: linear-gradient(135deg, #0f172a, #115e59);
}

.tutorial-media-top span,
.tutorial-media-top b {
    color: #fff;
    background: rgba(15, 23, 42, .6);
    backdrop-filter: blur(8px);
    border-radius: 10px;
    padding: 6px 9px;
    font-size: .68rem;
}

/* ==========================================
   لایه‌های پیش‌نمایش و دکمه پخش (اصلاح‌شده)
   ========================================== */

/* لایه رویی کارت‌های دارای ویدیو */
.tutorial-preview-layer {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;

    display: flex;
    align-items: center;
    justify-content: center;

    background: rgba(15, 23, 42, 0.25);
    backdrop-filter: blur(2px);

    cursor: pointer;
    transition: background 0.3s ease;

    z-index: 3;
}

.tutorial-preview-layer:hover {
    background: rgba(15, 23, 42, 0.12);
}

/* لایه کارت‌های بدون ویدیو (Placeholder) */
.tutorial-placeholder {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;

    display: flex;
    align-items: center;
    justify-content: center;

    background: linear-gradient(135deg, #0f172a, #0f766e);
    color: rgba(255, 255, 255, 0.9);

    z-index: 3;
}

/* متن placeholder */
.tutorial-placeholder small {
    position: absolute;
    left: 20px;
    right: 20px;
    bottom: 22px;

    text-align: center;

    font-size: 0.85rem;
    line-height: 1.6;
    font-weight: 500;
    color: #cbd5e1;

    pointer-events: none;
}

/* استایل مشترک و بی‌نقص دکمه پخش (برای هر دو حالت) */
.tutorial-play-button,
.placeholder-play {
    position: absolute;
    top: 50%;
    left: 50%;

    width: 72px;
    height: 72px;

    display: flex;
    align-items: center;
    justify-content: center;

    transform: translate(-50%, -50%);
    transform-origin: center center;

    border-radius: 50%;

    background: rgba(255, 255, 255, 0.96);
    color: #ea580c;

    box-shadow:
            0 8px 20px rgba(0, 0, 0, 0.25),
            0 0 0 1px rgba(255, 255, 255, 0.15);

    transition:
            transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
            box-shadow 0.3s ease,
            background 0.3s ease;

    z-index: 2;
}

/* آیکون */
.tutorial-play-button svg,
.placeholder-play svg {
    width: 28px;
    height: 28px;

    display: block;

    fill: currentColor;

    margin: 0;
    padding: 0;

    transform: translateX(1px);
}

/* Placeholder غیرقابل کلیک */
.placeholder-play {
    opacity: 0.72;
    cursor: default;
}

/* حالت غیرفعال برای placeholder */
.placeholder-play {
    cursor: default;
    opacity: 0.7;
}

.placeholder-play svg {
    opacity: 0.5;
}

/* --- انیمیشن پالس (Pulse) حرفه‌ای --- */
.tutorial-play-button::before,
.tutorial-play-button::after,
.placeholder-play::before,
.placeholder-play::after {
    content: "";

    position: absolute;
    inset: 0;

    border-radius: 50%;

    border: 2px solid rgba(234, 88, 12, 0.6);

    opacity: 0;

    pointer-events: none;
}

/* حالت هاور: بزرگنمایی ملایم خود دکمه */

.tutorial-preview-layer:hover .tutorial-play-button {
    transform: translate(-50%, -50%) scale(1.08);

    background: #ffffff;

    box-shadow:
            0 12px 30px rgba(234, 88, 12, 0.35),
            0 0 0 1px rgba(255, 255, 255, 0.25);
}


.tutorial-card:hover .placeholder-play {
    transform: translate(-50%, -50%) scale(1.08);

    background: #ffffff;

    box-shadow:
            0 12px 30px rgba(234, 88, 12, 0.35),
            0 0 0 1px rgba(255, 255, 255, 0.25);
}

/* فعال‌سازی حلقه اول پالس */
.tutorial-preview-layer:hover .tutorial-play-button::before {
    animation: pulse-ring 1.8s
    cubic-bezier(0.215, 0.61, 0.355, 1)
    infinite;
}

.tutorial-preview-layer:hover .tutorial-play-button::after {
    animation: pulse-ring 1.8s
    cubic-bezier(0.215, 0.61, 0.355, 1)
    0.5s infinite;
}

/* فعال‌سازی حلقه دوم پالس با تأخیر */
.tutorial-card:hover .placeholder-play::before {
    animation: pulse-ring 1.8s
    cubic-bezier(0.215, 0.61, 0.355, 1)
    infinite;
}

.tutorial-card:hover .placeholder-play::after {
    animation: pulse-ring 1.8s
    cubic-bezier(0.215, 0.61, 0.355, 1)
    0.5s infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(0.8);
        opacity: 0.8;
        border-width: 3px;
    }

    100% {
        transform: scale(2.4);
        opacity: 0;
        border-width: 0;
    }
}

/* برچسب "پخش ویدیو" زیر دکمه */
.tutorial-watch-label {
    position: absolute;

    top: calc(50% + 55px);
    left: 50%;

    transform: translateX(-50%);

    white-space: nowrap;

    color: #fff;
    font-size: 0.9rem;
    font-weight: 700;

    text-shadow:
            0 2px 4px rgba(0, 0, 0, 0.6),
            0 1px 2px rgba(0, 0, 0, 0.4);

    transition: transform 0.3s ease;
}

.tutorial-preview-layer:hover .tutorial-watch-label {
    transform: translateX(-50%) translateY(2px);
}

.tutorial-media.has-video .tutorial-preview-layer,
.tutorial-media.is-placeholder .tutorial-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* اطمینان از اینکه اطلاعات بالای تصویر
   روی دکمه پخش نیاید */
.tutorial-media-top {
    position: absolute;
    top: 12px;
    left: 12px;
    right: 12px;

    display: flex;
    justify-content: space-between;
    align-items: center;

    pointer-events: none;

    z-index: 5;
}

/* --- Card Body --- */
.tutorial-card-body {
    padding: 20px;
}

.tutorial-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 10px;
}

.tutorial-card-tags span {
    font-size: .7rem;
    font-weight: 800;
    padding: 5px 9px;
    border-radius: 999px;
    background: #f1f5f9;
    color: #475569;
}

.tutorial-card-tags .featured-tag {
    background: rgba(249, 115, 22, .10);
    color: #c2410c;
}

.tutorial-card h2 {
    font-size: 1.15rem;
    line-height: 1.7;
    margin-bottom: 8px;
}

.tutorial-card p {
    color: #64748b;
    line-height: 1.9;
    font-size: .87rem;
    min-height: 54px;
}

.tutorial-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
    padding-top: 14px;
    border-top: 1px solid #eef2f7;
    font-size: .72rem;
    color: #94a3b8;
}

.tutorial-card-footer a {
    color: #0f766e;
    font-weight: 800;
    text-decoration: none;
    transition: color 0.2s;
}

.tutorial-card-footer a:hover {
    color: #0d9488;
}

.tutorial-not-ready {
    color: #f59e0b;
    font-weight: 700;
}

/* --- Empty State & Back --- */
.tutorial-empty {
    margin-top: 30px;
    text-align: center;
    padding: 60px 20px;
    border: 1px dashed #cbd5e1;
    border-radius: 24px;
    background: #fff;
}

.tutorial-empty[hidden] {
    display: none !important;
}

.empty-icon {
    font-size: 2.8rem;
    color: #94a3b8;
}

.tutorial-empty h2 {
    margin: 10px 0;
}

.tutorial-empty p {
    color: #64748b;
}

.tutorial-empty button {
    margin-top: 18px;
    border: 0;
    border-radius: 12px;
    padding: 11px 17px;
    background: #0f766e;
    color: #fff;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
    transition: background 0.2s;
}

.tutorial-empty button:hover {
    background: #0d9488;
}

.tutorial-back {
    text-align: center;
    padding: 45px 0 20px;
}

.tutorial-back a {
    color: #0f766e;
    font-weight: 800;
    text-decoration: none;
}

/* ==========================================
   Video Modal & Quality Selector
   ========================================== */
.tutorial-video-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.tutorial-video-modal[hidden] {
    display: none !important;
}

.tutorial-video-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
}

.tutorial-video-dialog {
    position: relative;
    width: 100%;
    max-width: 900px;
    background: #0f172a;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 10;
}

.tutorial-video-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(15, 23, 42, 0.98);
    gap: 15px;
}

.tutorial-modal-kicker {
    display: block;
    font-size: 0.7rem;
    color: #fdba74;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.tutorial-video-header h2 {
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
}

.tutorial-modal-close {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #ffffff;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: background 0.2s;
}

.tutorial-modal-close:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.tutorial-modal-close svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.tutorial-video-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
}

/* --- Quality Selector --- */
.video-quality-selector {
    position: relative;
}

.quality-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 6px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

.quality-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

.quality-dropdown {
    position: absolute;
    top: 120%;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    overflow: hidden;
    display: none;
    min-width: 100px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    z-index: 50;
}

.quality-dropdown.show {
    display: block;
    animation: fadeInDropdown 0.2s ease-out;
}

.quality-option {
    padding: 10px 16px;
    color: #cbd5e1;
    cursor: pointer;
    font-size: 0.85rem;
    text-align: center;
    transition: all 0.2s;
}

.quality-option:hover {
    background: rgba(59, 130, 246, 0.2);
    color: #ffffff;
}

.quality-option.active {
    color: #3b82f6;
    font-weight: 700;
    background: rgba(59, 130, 246, 0.1);
}

@keyframes fadeInDropdown {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Video Loader --- */
.video-loader {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    background: rgba(15, 23, 42, 0.9);
    z-index: 10;
    font-size: 0.9rem;
    gap: 12px;
}

.video-loader .spinner {
    width: 40px; height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* --- Toast Notification --- */
.video-toast {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(15, 23, 42, 0.95);
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-family: inherit;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 100000;
    display: flex;
    align-items: center;
    gap: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    pointer-events: none;
}

.video-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.video-toast.error { border-right: 4px solid #ef4444; }
.video-toast.success { border-right: 4px solid #10b981; }

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1050px) {
    .tutorials-hero-inner {
        grid-template-columns: 1fr;
    }
    .tutorials-hero-card {
        max-width: 430px;
        margin: 0 auto;
    }
    .tutorial-toolbar {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 850px) {
    .tutorial-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .tutorials-hero {
        padding-top: 85px;
    }
    .tutorial-grid {
        grid-template-columns: 1fr;
    }
    .tutorial-controls {
        display: grid;
        grid-template-columns: 1fr;
    }
    .tutorial-controls select {
        width: 100%;
    }
    .tutorial-video-dialog {
        max-width: 95vw;
    }
    .tutorial-video-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .tutorial-video-header > div:last-child {
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
}

/* ==========================================
   اصلاحات هدر مودال، دکمه بستن و کیفیت
   ========================================== */

/* عنوان سمت راست: اجازه می‌دهد در صورت طولانی بودن کوتاه شود */
.tutorial-video-header > div:first-child {
    flex: 1;
    min-width: 0;
}

/* دکمه‌های سمت چپ: جلوگیری از فشرده شدن */
.tutorial-video-header > div:last-child {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0; /* ❗ کلید حل مشکل دیده نشدن دکمه کیفیت */
}

/* --- استایل جدید و مدرن دکمه بستن (ضربدر) --- */
.tutorial-modal-close {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #cbd5e1;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tutorial-modal-close:hover {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.4);
    color: #ef4444;
    transform: rotate(90deg); /* چرخش زیبا هنگام هاور */
}

.tutorial-modal-close svg {
    width: 22px;
    height: 22px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
}

/* --- اطمینان از نمایش دکمه کیفیت --- */
.quality-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 8px 14px;
    border-radius: 10px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.2s ease;
    display: flex; /* ❗ اطمینان از نمایش */
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.quality-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.3);
}

/* --- اصلاح قطعی لودر --- */
.video-loader {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: none; /* پیش‌فرض مخفی */
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    background: rgba(15, 23, 42, 0.95);
    z-index: 20; /* بالاتر از ویدیو */
    font-size: 0.9rem;
    gap: 12px;
    border-radius: 0 0 16px 16px;
}

/* کلاسی که با JS اضافه می‌کنیم تا لودر نمایش داده شود */
.video-loader.is-active {
    display: flex !important;
}

.video-loader .spinner {
    width: 40px; height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }