/**
 * Video Learning Sessions Page - Industrial Cyber Console
 * 任务列表页面样式
 */

/* 导入核心样式 */
@import url('./cyber-core.css');

/* ==================== 页面容器 ==================== */
.sessions-page {
    min-height: 100vh;
    padding: 2rem;
}

/* ==================== 页面标题 ==================== */
.page-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--cyber-green);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    text-shadow: 0 0 30px var(--cyber-green-dim);
    margin-bottom: 0.5rem;
}

.page-header h1::before {
    content: '>';
    margin-right: 0.75rem;
    animation: blink 1s step-end infinite;
}

.page-header p {
    color: var(--cyber-text-secondary);
    font-family: var(--cyber-font-mono);
    font-size: 0.85rem;
}

.page-header p::before {
    content: '// ';
    color: var(--cyber-green);
}

/* ==================== Sessions Grid ==================== */
.sessions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1.5rem;
    padding: 1rem 0;
}

/* ==================== Session Card ==================== */
.session-card {
    background: linear-gradient(135deg, var(--cyber-bg-secondary) 0%, var(--cyber-bg-tertiary) 100%);
    border: 1px solid var(--cyber-border);
    padding: 1.5rem;
    position: relative;
    transition: var(--cyber-transition-normal);
    overflow: hidden;
}

.session-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--cyber-green), transparent);
    opacity: 0;
    transition: var(--cyber-transition-normal);
}

.session-card::after {
    content: '';
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cyber-text-muted);
    box-shadow: 0 0 10px currentColor;
    transition: var(--cyber-transition-normal);
}

.session-card:hover {
    border-color: var(--cyber-green);
    box-shadow: 0 0 30px var(--cyber-green-dim);
    transform: translateY(-4px);
}

.session-card:hover::before {
    opacity: 1;
}

.session-card.completed {
    opacity: 0.7;
}

.session-card.completed::after {
    background: var(--cyber-text-muted);
}

/* ==================== Session Header ==================== */
.session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    position: relative;
}

.session-platform {
    font-size: 0.95rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--cyber-font-display);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--cyber-text-primary);
}

.session-platform::before {
    content: '◆';
    color: var(--cyber-green);
    font-size: 0.7rem;
}

/* ==================== Session Status ==================== */
.session-status {
    padding: 0.3rem 0.75rem;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-family: var(--cyber-font-display);
    border: 1px solid;
}

.session-status.status-active {
    background: var(--cyber-green-dim);
    color: var(--cyber-green);
    border-color: var(--cyber-green);
    animation: pulse 2s infinite;
}

.session-status.status-paused {
    background: var(--cyber-amber-dim);
    color: var(--cyber-amber);
    border-color: var(--cyber-amber);
}

.session-status.status-completed {
    background: rgba(148, 163, 184, 0.15);
    color: var(--cyber-text-secondary);
    border-color: var(--cyber-text-muted);
}

/* ==================== Session ID ==================== */
.session-id {
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--cyber-bg-primary);
    border: 1px solid var(--cyber-border);
    position: relative;
}

.session-id::before {
    content: 'SESSION_ID';
    position: absolute;
    top: -0.5rem;
    left: 0.5rem;
    background: var(--cyber-bg-secondary);
    padding: 0 0.5rem;
    font-size: 0.55rem;
    font-family: var(--cyber-font-display);
    color: var(--cyber-text-muted);
    letter-spacing: 0.05em;
}

.session-id small {
    display: block;
    font-size: 0.65rem;
    color: var(--cyber-text-muted);
    margin-bottom: 0.35rem;
    font-family: var(--cyber-font-mono);
}

.session-id small::before {
    content: '// ';
    color: var(--cyber-border-bright);
}

.session-id code {
    font-family: var(--cyber-font-mono);
    font-size: 0.75rem;
    color: var(--cyber-green);
    word-break: break-all;
    display: block;
}

/* ==================== Session Progress ==================== */
.session-progress {
    margin-bottom: 1rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--cyber-text-secondary);
    margin-bottom: 0.5rem;
    font-family: var(--cyber-font-mono);
}

.progress-info span:first-child::before {
    content: 'PROGRESS::';
    color: var(--cyber-green);
    margin-right: 0.35rem;
}

.progress-bar {
    height: 6px;
    background: var(--cyber-bg-primary);
    border: 1px solid var(--cyber-border);
    overflow: hidden;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.3) 2px,
        rgba(0, 0, 0, 0.3) 4px
    );
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--cyber-green), var(--cyber-blue));
    transition: width 0.5s ease;
    box-shadow: 0 0 10px var(--cyber-green-glow);
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 15px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3));
    animation: shimmer 2s infinite;
}

/* ==================== Session Duration ==================== */
.session-duration {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    font-size: 0.75rem;
    color: var(--cyber-text-muted);
    font-family: var(--cyber-font-mono);
}

.session-duration::before {
    content: '⏱';
    color: var(--cyber-green);
    font-size: 0.85rem;
}

/* ==================== Session Actions ==================== */
.session-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.session-actions .btn {
    flex: 1;
    min-width: 80px;
    font-size: 0.7rem;
    padding: 0.5rem 0.75rem;
}

/* ==================== Empty State ==================== */
.empty-state {
    text-align: center;
    padding: 6rem 2rem;
    color: var(--cyber-text-muted);
    position: relative;
}

.empty-state::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    border: 1px dashed var(--cyber-border);
    border-radius: 50%;
    animation: pulse 4s infinite;
}

.empty-state svg {
    margin-bottom: 2rem;
    color: var(--cyber-text-muted);
    opacity: 0.3;
    position: relative;
    z-index: 1;
}

.empty-state h2 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--cyber-text-secondary);
    font-family: var(--cyber-font-display);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    position: relative;
    z-index: 1;
}

.empty-state p {
    font-size: 0.9rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.empty-state .btn {
    position: relative;
    z-index: 1;
}

/* ==================== Button Styles ==================== */
.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.7rem;
}

/* ==================== Toast Notifications ==================== */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 0.75rem 1rem;
    border: 1px solid;
    font-size: 0.8rem;
    font-family: var(--cyber-font-mono);
    position: relative;
    overflow: hidden;
    animation: slideIn 0.3s ease;
    backdrop-filter: blur(10px);
}

.toast::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
}

.toast.info {
    background: var(--cyber-blue-dim);
    color: var(--cyber-blue);
    border-color: var(--cyber-blue);
}

.toast.info::before {
    background: var(--cyber-blue);
}

.toast.success {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
    border-color: #10b981;
}

.toast.success::before {
    background: #10b981;
}

.toast.error {
    background: var(--cyber-red-dim);
    color: var(--cyber-red);
    border-color: var(--cyber-red);
}

.toast.error::before {
    background: var(--cyber-red);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==================== Loading State ==================== */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    color: var(--cyber-text-muted);
}

.loading-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    color: var(--cyber-green);
    animation: spin 1s linear infinite;
}

.loading-state p {
    font-family: var(--cyber-font-mono);
    font-size: 0.85rem;
}

.loading-state p::before {
    content: 'LOADING...';
    color: var(--cyber-green);
    animation: blink 1s step-end infinite;
}

/* ==================== 装饰性元素 ==================== */
.sessions-grid::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(0, 255, 159, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 212, 255, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ==================== Responsive Design ==================== */
@media (max-width: 768px) {
    .sessions-page {
        padding: 1rem;
    }

    .sessions-grid {
        grid-template-columns: 1fr;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }

    .session-actions {
        flex-direction: column;
    }

    .session-actions .btn {
        width: 100%;
    }

    .toast-container {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
    }
}

/* ==================== 删除按钮特殊样式 ==================== */
.btn-delete {
    background: var(--cyber-red-dim);
    color: var(--cyber-red);
    border-color: var(--cyber-red);
}

.btn-delete:hover:not(:disabled) {
    background: var(--cyber-red);
    color: white;
    box-shadow: var(--cyber-glow-red);
}

/* ==================== 详情按钮特殊样式 ==================== */
.btn-details {
    background: var(--cyber-blue-dim);
    color: var(--cyber-blue);
    border-color: var(--cyber-blue);
}

.btn-details:hover:not(:disabled) {
    background: var(--cyber-blue);
    color: var(--cyber-bg-primary);
    box-shadow: var(--cyber-glow-blue);
}

/* ==================== 控制按钮 ==================== */
.btn-control {
    background: var(--cyber-green-dim);
    color: var(--cyber-green);
    border-color: var(--cyber-green);
}

.btn-control:hover:not(:disabled) {
    background: var(--cyber-green);
    color: var(--cyber-bg-primary);
    box-shadow: var(--cyber-glow-green);
}

.btn-control.paused {
    background: var(--cyber-amber-dim);
    color: var(--cyber-amber);
    border-color: var(--cyber-amber);
}

.btn-control.paused:hover:not(:disabled) {
    background: var(--cyber-amber);
    color: var(--cyber-bg-primary);
}

/* ==================== 过滤器样式 ==================== */
.sessions-filter {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--cyber-border);
    color: var(--cyber-text-secondary);
    font-family: var(--cyber-font-display);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: var(--cyber-transition-fast);
}

.filter-btn:hover {
    border-color: var(--cyber-green);
    color: var(--cyber-green);
}

.filter-btn.active {
    background: var(--cyber-green-dim);
    border-color: var(--cyber-green);
    color: var(--cyber-green);
}