/* ============================================
   QUICK SUBSCRIPTIONS - PROFESSIONAL DESIGN
   Complete UI with animations and modern styling
   ============================================ */

/* ========== RESET & BASE ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --primary-gradient: linear-gradient(135deg, #2563eb, #7c3aed);
    --secondary: #0f172a;
    --success: #10b981;
    --success-dark: #059669;
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --warning: #f59e0b;
    --warning-dark: #d97706;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-50);
    min-height: 100vh;
    color: var(--gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ========== UTILITY CLASSES ========== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* ========== APP WRAPPER ========== */
.app-wrapper {
    max-width: 1280px;
    width: 100%;
    margin: 2rem auto;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-2xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
    min-height: 85vh;
    animation: fadeIn 0.5s ease-out;
}

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

/* ========== HEADER ========== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--gray-200);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--gray-900);
    text-decoration: none;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-full);
    transition: var(--transition);
    color: var(--gray-600);
    text-decoration: none;
    position: relative;
}

.nav-links a:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.nav-links a.active {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.nav-links a.active:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.2);
    opacity: 0;
    transition: var(--transition);
}

.btn:hover::after {
    opacity: 1;
}

.btn:active {
    transform: scale(0.95);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: var(--gray-800);
    color: white;
}

.btn-secondary:hover {
    background: var(--gray-900);
    transform: translateY(-2px);
}

.btn-success {
    background: var(--success);
    color: white;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: var(--success-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: var(--danger-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.btn-warning {
    background: var(--warning);
    color: white;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    background: var(--warning-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    background: var(--gray-100);
    border-color: var(--gray-400);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ========== PANELS / CARDS ========== */
.panel {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.panel:hover {
    box-shadow: var(--shadow-md);
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.panel-title i {
    color: var(--primary);
    font-size: 1.3rem;
}

/* ========== FORMS ========== */
.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-bottom: 0.4rem;
}

.input-group label i {
    margin-right: 0.4rem;
    color: var(--gray-500);
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 0.85rem 1.2rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
    outline: none;
    color: var(--gray-900);
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.input-group input::placeholder {
    color: var(--gray-400);
}

.input-group textarea {
    border-radius: var(--radius-md);
    min-height: 100px;
    resize: vertical;
}

.input-group .input-icon {
    position: relative;
}

.input-group .input-icon i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}

.input-group .input-icon input {
    padding-left: 2.8rem;
}

/* ========== STATUS BOX ========== */
.status-box {
    margin-top: 1rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-left: 4px solid var(--primary);
    transition: var(--transition);
    background: var(--gray-50);
}

.status-box i {
    font-size: 1.2rem;
}

.status-box.success {
    border-left-color: var(--success);
    background: #ecfdf5;
    color: #065f46;
}

.status-box.success i {
    color: var(--success);
}

.status-box.failed {
    border-left-color: var(--danger);
    background: #fef2f2;
    color: #991b1b;
}

.status-box.failed i {
    color: var(--danger);
}

.status-box.loading {
    border-left-color: var(--warning);
    background: #fffbeb;
    color: #92400e;
}

.status-box.loading i {
    color: var(--warning);
}

.status-box.info {
    border-left-color: var(--primary);
    background: #eff6ff;
    color: #1e40af;
}

.status-box.info i {
    color: var(--primary);
}

/* ========== SUBSCRIPTION GRID ========== */
.subscription-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.subscription-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
    border: 2px solid transparent;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.subscription-card:hover {
    transform: translateY(-4px);
    background: white;
    box-shadow: var(--shadow-lg);
    border-color: var(--gray-200);
}

.subscription-card.selected {
    border-color: var(--primary);
    background: white;
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.15);
}

.subscription-card.loading {
    opacity: 0.6;
    pointer-events: none;
}

.subscription-card i {
    font-size: 2.5rem;
    color: var(--primary);
    display: block;
    margin-bottom: 0.5rem;
}

.subscription-card .name {
    font-weight: 700;
    font-size: 1rem;
    color: var(--gray-900);
}

.subscription-card .description {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-top: 0.2rem;
}

.subscription-card .price-tag {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--gray-600);
}

/* ========== GRID LAYOUTS ========== */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
}

/* ========== TOAST NOTIFICATIONS ========== */
.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 400px;
}

.toast {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    background: white;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary);
    animation: slideIn 0.3s ease-out;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }
.toast.warning { border-color: var(--warning); }
.toast.info { border-color: var(--primary); }

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

/* ========== RESPONSIVE ========== */
@media (max-width: 992px) {
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .app-wrapper {
        padding: 1.5rem;
        margin: 1rem;
        border-radius: var(--radius-lg);
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
    }
    
    .nav-links {
        width: 100%;
        justify-content: flex-start;
        gap: 0.3rem;
    }
    
    .nav-links a {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
    
    .subscription-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .panel {
        padding: 1.2rem;
    }
    
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
    }
    
    .btn-lg {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .app-wrapper {
        padding: 1rem;
        margin: 0.5rem;
        border-radius: var(--radius-md);
    }
    
    .subscription-grid {
        grid-template-columns: 1fr;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 1.2rem;
    }
}

/* ========== ANIMATIONS ========== */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.spinner {
    display: inline-block;
    width: 1.2rem;
    height: 1.2rem;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.pulse {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.shimmer {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* ========== LOADING OVERLAY ========== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-overlay .spinner {
    width: 3rem;
    height: 3rem;
    border-width: 4px;
}

/* ========== ALERTS ========== */
.alert {
    padding: 0.8rem 1.2rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    border-left: 4px solid transparent;
    font-weight: 500;
}

.alert-success {
    background: #ecfdf5;
    border-color: var(--success);
    color: #065f46;
}

.alert-danger {
    background: #fef2f2;
    border-color: var(--danger);
    color: #991b1b;
}

.alert-warning {
    background: #fffbeb;
    border-color: var(--warning);
    color: #92400e;
}

.alert-info {
    background: #eff6ff;
    border-color: var(--primary);
    color: #1e40af;
}