:root {
    --tg-theme-bg-color: #0f172a; /* Deep Slate */
    --tg-theme-text-color: #f8fafc;
    --tg-theme-hint-color: #94a3b8;
    --tg-theme-link-color: #38bdf8;
    --tg-theme-button-color: #3b82f6;
    --tg-theme-button-text-color: #ffffff;
    
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Vazirmatn', Tahoma, sans-serif;
}

body {
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    background-image: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                      radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.15) 0%, transparent 50%);
    background-attachment: fixed;
    min-height: 100vh;
}

/* Glassmorphism Classes */
.glass-header {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 15px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 16px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

/* User Info Header */
.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

#user-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: 2px solid var(--tg-theme-button-color);
    padding: 2px;
}

.user-info h2 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.status-badge {
    font-size: 0.75rem;
    color: var(--tg-theme-hint-color);
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 8px;
    border-radius: 12px;
    display: inline-block;
}

/* Main Content */
main {
    padding: 20px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    background: rgba(0,0,0,0.2);
    padding: 6px;
    border-radius: 12px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--tg-theme-hint-color);
    padding: 10px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: var(--glass-border);
    color: var(--tg-theme-text-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Tasks List */
.task-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.task-title {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--tg-theme-text-color);
}

.task-status {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 6px;
    background: rgba(255,255,255,0.1);
    white-space: nowrap;
    margin-right: 10px;
}

.status-OPEN { background: rgba(56, 189, 248, 0.2); color: #38bdf8; }
.status-CLOSED { background: rgba(16, 185, 129, 0.2); color: #10b981; }
.status-IN_PROGRESS { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }

.task-details {
    display: flex;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--tg-theme-hint-color);
    margin-bottom: 15px;
}

.task-details span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.task-actions {
    display: flex;
    gap: 10px;
    margin-top: 10px;
    border-top: 1px solid var(--glass-border);
    padding-top: 12px;
}

.btn-action {
    flex: 1;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    color: var(--tg-theme-link-color);
    padding: 8px 12px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
}

.btn-action:hover, .btn-action:active {
    background: rgba(255,255,255,0.1);
    transform: scale(0.98);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    width: 100%;
    max-width: 400px;
    background: #1e293b; /* Solid fallback */
    background: rgba(30, 41, 59, 0.95);
}

.modal-content h3 {
    margin-bottom: 5px;
    color: #fff;
}

.task-title-mini {
    font-size: 0.85rem;
    color: var(--tg-theme-hint-color);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--glass-border);
}

textarea {
    width: 100%;
    height: 120px;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: #fff;
    padding: 12px;
    font-size: 0.95rem;
    resize: none;
    margin-bottom: 15px;
    outline: none;
    transition: border-color 0.3s;
}

textarea:focus {
    border-color: var(--tg-theme-link-color);
}

.modal-actions {
    display: flex;
    gap: 10px;
}

.btn-primary {
    flex: 2;
    background: var(--accent-gradient);
    border: none;
    color: white;
    padding: 12px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-cancel {
    flex: 1;
    background: rgba(255,255,255,0.1);
    border: 1px solid var(--glass-border);
    color: #fff;
    padding: 12px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
}

/* Loader */
.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 0;
    color: var(--tg-theme-hint-color);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255,255,255,0.1);
    border-top-color: var(--tg-theme-link-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

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