/* ==========================================================================
   VClass LMS Pro v3.0 - Multi-Lesson Selector & Stealth Video Classroom CSS
   ========================================================================== */

:root {
    --vclass-primary: #1877f2;
    --vclass-primary-dark: #1d4ed8;
    --vclass-success: #16a34a;
    --vclass-bg-dark: #0f172a;
    --vclass-surface: #ffffff;
    --vclass-border: #e2e8f0;
    --vclass-text: #1e293b;
    --vclass-muted: #64748b;
}

/* 0. "Select lesson type" 2-Column Radio Card Selector (Matching Screenshot) */
.vclass-type-selector-box {
    background: #ffffff;
    border-radius: 14px;
    padding: 6px 4px 16px;
    margin-bottom: 18px;
}

.vclass-type-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.vclass-type-heading {
    font-size: 18px !important;
    font-weight: 700 !important;
    color: #0f172a !important;
    margin: 0 !important;
}

.vclass-selected-pill {
    background: #eff6ff;
    color: #1877f2;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 999px;
    border: 1px solid #bfdbfe;
}

.vclass-lesson-type-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.vclass-type-card {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    padding: 15px 18px;
    border: 1.5px solid #e2e8f0;
    border-radius: 10px;
    background: #ffffff;
    cursor: pointer;
    transition: all 0.18s ease;
    position: relative;
    user-select: none;
}

.vclass-type-card:hover {
    border-color: #93c5fd;
    background: #f8fafc;
}

.vclass-type-card.selected {
    border-color: #1877f2;
    background: #ffffff;
    box-shadow: 0 0 0 1px rgba(24, 119, 242, 0.15);
}

.vclass-type-card-title {
    font-size: 14.5px;
    font-weight: 500;
    color: #1e293b;
}

.vclass-type-radio {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.vclass-radio-circle {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 1.5px solid #cbd5e1;
    background: #fff;
    display: inline-block;
    flex-shrink: 0;
    transition: all 0.18s ease;
}

.vclass-type-card.selected .vclass-radio-circle {
    background: #1877f2;
    border-color: #1877f2;
    box-shadow: inset 0 0 0 3px #ffffff;
}

.vclass-next-step-bar {
    margin-top: 16px;
}

.vclass-next-btn {
    background: #1877f2;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 10px 22px;
    font-size: 14.5px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(24, 119, 242, 0.25);
    transition: background 0.18s ease, transform 0.15s ease;
}

.vclass-next-btn:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
}

.vclass-chevron {
    font-size: 18px;
    line-height: 1;
}

.vclass-lesson-fields-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 18px;
}

.vclass-fields-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

/* 1. Stealth Video & Multi-Format Stage */
.vclass-player-container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto 24px;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.25);
    user-select: none;
    -webkit-user-select: none;
    position: relative;
}

.vclass-player-container:fullscreen,
.vclass-player-container:-webkit-full-screen {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: #000;
}

.vclass-video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    background: #000;
    overflow: hidden;
}

.vclass-player-container:fullscreen .vclass-video-wrapper,
.vclass-player-container:-webkit-full-screen .vclass-video-wrapper {
    padding-top: 0;
    height: calc(100vh - 54px);
}

.vclass-yt-cropper {
    position: absolute;
    top: -68px;
    left: -2px;
    width: calc(100% + 4px);
    height: calc(100% + 136px);
    pointer-events: none !important;
    user-select: none !important;
    z-index: 10;
}

.vclass-yt-cropper iframe {
    width: 100% !important;
    height: 100% !important;
    border: 0 !important;
    pointer-events: none !important;
}

.vclass-hidden-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    z-index: 12;
    pointer-events: none;
    display: none;
}

/* Multi-Format Stage (Document, Text, Image, Google Drive, Iframe, SCORM) */
.vclass-multiformat-stage {
    position: absolute;
    inset: 0;
    z-index: 20;
    background: #0f172a;
    color: #f8fafc;
    overflow-y: auto;
}

.vclass-multiformat-stage iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.vclass-text-lesson-reader {
    padding: 32px 36px 70px;
    max-width: 820px;
    margin: 0 auto;
    line-height: 1.75;
    font-size: 16px;
    color: #f1f5f9;
    user-select: none;
}

.vclass-text-lesson-reader h1,
.vclass-text-lesson-reader h2,
.vclass-text-lesson-reader h3,
.vclass-text-lesson-reader h4 {
    color: #ffffff !important;
}

.vclass-image-lesson-viewer {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

.vclass-image-lesson-viewer img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 6px;
    pointer-events: none;
}

/* Google Drive Top-Right Pop-Out Blocker Shield */
.vclass-gdrive-corner-shield {
    position: absolute;
    top: 0;
    right: 0;
    width: 160px;
    height: 64px;
    z-index: 36;
    background: #0f172a;
    color: #93c5fd;
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom-left-radius: 8px;
}

.vclass-state-curtain {
    position: absolute;
    inset: 0;
    z-index: 25;
    background: radial-gradient(circle at center, rgba(15, 23, 42, 0.92) 0%, rgba(2, 6, 23, 0.98) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
}

.vclass-state-curtain.active {
    opacity: 1;
    pointer-events: auto;
}

.vclass-curtain-inner {
    max-width: 520px;
    color: #fff;
}

.vclass-curtain-badge {
    display: inline-block;
    background: rgba(37, 99, 235, 0.25);
    border: 1px solid rgba(96, 165, 250, 0.4);
    color: #93c5fd;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 12px;
}

.vclass-curtain-title {
    color: #fff !important;
    font-size: clamp(16px, 2.5vw, 22px);
    margin: 0 0 18px !important;
    line-height: 1.35;
}

.vclass-big-play-btn {
    width: 74px;
    height: 74px;
    border-radius: 50%;
    background: var(--vclass-primary);
    color: #fff;
    border: 4px solid rgba(255, 255, 255, 0.25);
    font-size: 28px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, background 0.2s ease;
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.5);
}

.vclass-big-play-btn:hover {
    transform: scale(1.08);
    background: var(--vclass-primary-dark);
}

.vclass-curtain-sub {
    color: #94a3b8;
    font-size: 13px;
    margin-top: 12px;
}

.vclass-click-shield {
    position: absolute;
    inset: 0;
    z-index: 30;
    background: transparent;
    cursor: pointer;
}

.vclass-watermark-overlay {
    position: absolute;
    top: 15%;
    left: 15%;
    z-index: 38;
    pointer-events: none !important;
    user-select: none !important;
    color: rgba(255, 255, 255, 0.42);
    background: rgba(0, 0, 0, 0.18);
    padding: 4px 10px;
    border-radius: 4px;
    font-family: monospace;
    font-size: clamp(10px, 1.4vw, 13px);
    line-height: 1.35;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.9);
    transition: top 1.4s ease-in-out, left 1.4s ease-in-out;
}

.vclass-security-toast {
    position: absolute;
    top: 18px;
    right: 18px;
    z-index: 50;
    background: rgba(220, 38, 38, 0.92);
    color: #fff;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    display: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.vclass-custom-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 40;
    background: linear-gradient(to top, rgba(2, 6, 23, 0.95) 0%, rgba(2, 6, 23, 0.75) 70%, transparent 100%);
    padding: 12px 16px 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.vclass-progress-row {
    width: 100%;
    display: flex;
    align-items: center;
}

.vclass-seek-bar {
    width: 100%;
    height: 6px;
    cursor: pointer;
    accent-color: var(--vclass-primary);
}

.vclass-controls-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.vclass-ctrl-left,
.vclass-ctrl-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.vclass-ctrl-btn {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: background 0.15s;
}

.vclass-ctrl-btn:hover {
    background: var(--vclass-primary);
}

.vclass-time-display {
    color: #e2e8f0;
    font-family: monospace;
    font-size: 13px;
    margin-left: 4px;
}

.vclass-vol-bar {
    width: 70px;
    height: 5px;
    accent-color: var(--vclass-primary);
    cursor: pointer;
}

.vclass-speed-select {
    background: rgba(15, 23, 42, 0.9);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 12px;
    cursor: pointer;
}

.vclass-player-footer-bar {
    background: #0f172a;
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    border-top: 1px solid #1e293b;
}

.vclass-shield-status {
    color: #94a3b8;
    font-size: 12px;
    font-weight: 500;
}

/* Classroom & Portal Layout */
.vclass-classroom-wrapper {
    max-width: 1320px;
    margin: 20px auto;
    padding: 0 15px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--vclass-text);
}

.vclass-classroom-banner {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    color: #fff;
    padding: 24px 28px;
    border-radius: 12px;
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.vclass-classroom-banner h1 {
    color: #fff !important;
    font-size: clamp(20px, 3vw, 28px);
    margin: 10px 0 0 !important;
}

.vclass-level-pill,
.vclass-lang-pill {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    margin-right: 8px;
}

.vclass-banner-progress {
    min-width: 240px;
    background: rgba(255, 255, 255, 0.08);
    padding: 14px 18px;
    border-radius: 10px;
}

.vclass-prog-label {
    font-size: 13px;
    margin-bottom: 6px;
}

.vclass-prog-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 99px;
    overflow: hidden;
    margin-bottom: 10px;
}

.vclass-prog-fill {
    height: 100%;
    background: #22c55e;
}

.vclass-cert-btn {
    display: inline-block;
    background: #eab308;
    color: #0f172a !important;
    font-weight: 700;
    font-size: 12px;
    padding: 6px 12px;
    border-radius: 6px;
    text-decoration: none !important;
}

.vclass-classroom-grid {
    display: grid;
    grid-template-columns: 1fr 370px;
    gap: 26px;
    align-items: start;
}

.vclass-tabs-nav {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--vclass-border);
    margin-bottom: 18px;
    overflow-x: auto;
}

.vclass-tab-btn {
    background: none;
    border: none;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--vclass-muted);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
}

.vclass-tab-btn.active {
    color: var(--vclass-primary);
    border-bottom-color: var(--vclass-primary);
}

.vclass-tab-pane {
    display: none;
    background: #fff;
    padding: 22px;
    border-radius: 10px;
    border: 1px solid var(--vclass-border);
}

.vclass-tab-pane.active {
    display: block;
}

.vclass-enroll-box,
.vclass-curriculum-card {
    background: #fff;
    border: 1px solid var(--vclass-border);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.vclass-price-large {
    font-size: 28px;
    font-weight: 800;
    color: var(--vclass-text);
    margin-bottom: 14px;
}

.vclass-price-large del {
    font-size: 16px;
    color: var(--vclass-muted);
    font-weight: 400;
    margin-left: 8px;
}

.vclass-coupon-row {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
}

.vclass-coupon-row input {
    flex: 1;
    padding: 8px 10px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
}

.vclass-coupon-row button {
    padding: 8px 14px;
    background: #334155;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.vclass-curr-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.vclass-curr-header h3 {
    margin: 0;
    font-size: 17px;
}

.vclass-sec-title {
    background: #f1f5f9;
    padding: 10px 14px;
    font-weight: 700;
    font-size: 13px;
    border-radius: 6px;
    margin-top: 10px;
}

.vclass-lesson-list {
    list-style: none !important;
    margin: 6px 0 0 !important;
    padding: 0 !important;
}

.vclass-lesson-item a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 6px;
    text-decoration: none !important;
    color: var(--vclass-text);
    font-size: 13.5px;
    transition: background 0.15s;
}

.vclass-lesson-item a:hover,
.vclass-lesson-item.active a {
    background: #eff6ff;
    color: var(--vclass-primary);
    font-weight: 600;
}

.vclass-l-name {
    flex: 1;
}

.vclass-l-dur {
    font-size: 12px;
    color: var(--vclass-muted);
    font-family: monospace;
}

.vclass-prev-tag {
    background: #dbeafe;
    color: #1d4ed8;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
}

.vclass-button {
    background: var(--vclass-primary);
    color: #fff !important;
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none !important;
    display: inline-block;
    text-align: center;
}

.vclass-button:hover {
    background: var(--vclass-primary-dark);
}

.vclass-btn-success {
    background: var(--vclass-success);
}

.vclass-btn-block {
    display: block;
    width: 100%;
    box-sizing: border-box;
}

.vclass-wishlist-btn {
    width: 100%;
    margin-top: 8px;
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

.vclass-course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 22px;
    margin: 20px 0;
}

.vclass-card {
    background: #fff;
    border: 1px solid var(--vclass-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
}

.vclass-card-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.vclass-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--vclass-muted);
    margin-bottom: 8px;
}

.vclass-card-footer {
    margin-top: auto;
    padding-top: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.vclass-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.vclass-stat-card {
    background: #fff;
    padding: 18px;
    border-radius: 10px;
    border: 1px solid var(--vclass-border);
    display: flex;
    flex-direction: column;
}

.vclass-stat-value {
    font-size: 26px;
    font-weight: 800;
    margin-top: 6px;
}

.vclass-two-col-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.vclass-panel-box {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid var(--vclass-border);
}

.vclass-panel-box input,
.vclass-panel-box select,
.vclass-panel-box textarea {
    width: 100%;
    padding: 8px 10px;
    margin: 6px 0 14px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    box-sizing: border-box;
}

@media (max-width: 992px) {
    .vclass-classroom-grid {
        grid-template-columns: 1fr;
    }
    .vclass-two-col-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .vclass-lesson-type-grid {
        grid-template-columns: 1fr;
    }
    .vclass-fields-grid {
        grid-template-columns: 1fr;
    }
    .vclass-classroom-banner {
        padding: 18px;
    }
    .vclass-custom-controls {
        padding: 8px 10px;
    }
    .vclass-vol-bar {
        display: none;
    }
    .vclass-ctrl-btn {
        padding: 4px 8px;
        font-size: 12px;
    }
}

/* Student Login & Registration Portal Styles */
.vclass-auth-wrapper {
    max-width: 480px;
    margin: 30px auto;
    padding: 0 12px;
}

.vclass-auth-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.vclass-auth-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: #f1f5f9;
    border-bottom: 1px solid #e2e8f0;
}

.vclass-auth-tab {
    background: none;
    border: none;
    padding: 14px 12px;
    font-size: 14px;
    font-weight: 700;
    color: #475569;
    cursor: pointer;
    transition: all 0.18s ease;
}

.vclass-auth-tab.active {
    background: #ffffff;
    color: #1877f2;
    border-bottom: 3px solid #1877f2;
}

.vclass-auth-pane {
    display: none;
    padding: 26px 28px;
}

.vclass-auth-pane.active {
    display: block;
}

.vclass-auth-pane h3 {
    margin: 0 0 6px !important;
    font-size: 20px !important;
    color: #0f172a !important;
}

.vclass-auth-sub {
    color: #64748b;
    font-size: 13.5px;
    margin: 0 0 18px;
}

.vclass-field-group {
    margin-bottom: 14px;
    text-align: left;
}

.vclass-field-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #334155;
    margin-bottom: 5px;
}

.vclass-field-group input {
    width: 100%;
    padding: 10px 12px;
    border: 1.5px solid #cbd5e1;
    border-radius: 8px;
    font-size: 14px;
    box-sizing: border-box;
}

.vclass-field-group input:focus {
    border-color: #1877f2;
    outline: none;
}

.vclass-auth-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 10px 0 14px;
    font-size: 13px;
}

.vclass-auth-error-msg {
    background: #fef2f2;
    border-left: 4px solid #dc2626;
    color: #991b1b;
    padding: 12px 16px;
    margin: 16px 24px 0;
    border-radius: 6px;
    font-size: 13.5px;
    font-weight: 600;
}

.vclass-logged-bar {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 16px 22px;
    margin-bottom: 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
}