:root {
    --bg-base: #0f172a; /* Slate 900 */
    --bg-surface: rgba(30, 41, 59, 0.7); /* Slate 800 with opacity */
    --bg-glass: rgba(255, 255, 255, 0.03);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    --accent-primary: #8b5cf6; /* Vibrant violet */
    --accent-secondary: #3b82f6; /* Blue */
    --accent-success: #10b981; /* Emerald */
    --accent-warning: #f59e0b;
    
    --gradient-primary: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --gradient-success: linear-gradient(135deg, #059669, #10b981);
    
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 999px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(139, 92, 246, 0.15), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(59, 130, 246, 0.15), transparent 25%);
    background-attachment: fixed;
}

/* App Shell (Mobile First constraint) */
#app-container {
    width: 100%;
    max-width: 480px;
    min-height: 100vh;
    position: relative;
    background: var(--bg-surface);
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 40px rgba(0,0,0,0.5);
}

/* Utilities */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.feature-gradient {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(59, 130, 246, 0.2)) !important;
    border-color: rgba(139, 92, 246, 0.3) !important;
}

.success-gradient {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(5, 150, 105, 0.2)) !important;
    border-color: rgba(16, 185, 129, 0.3) !important;
}

/* Typography */
h1 { font-size: 2rem; font-weight: 700; margin-bottom: 0.25rem; }
h2 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.5rem; }
h3 { font-size: 1.1rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 0.25rem; }
p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.5; }

/* Header */
.glass-header {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: var(--bg-glass);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.icon-btn {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition);
}
.icon-btn:hover {
    background: rgba(255,255,255,0.1);
    transform: scale(1.05);
}

/* Navigation Base */
.view {
    display: none;
    padding: 1.5rem;
    padding-bottom: 6rem; /* space for bottom nav */
    animation: fadeIn 0.4s ease forwards;
}

.view.active {
    display: block;
}

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

/* Glass Card */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255,255,255,0.2);
}

/* Cards & Layout */
.page-header {
    margin-bottom: 1.5rem;
}

.mt-4 {
    margin-top: 2rem;
}

/* Dashboard Stats */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.25rem;
}

.stat-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.highlight-border {
    border-top: 2px solid var(--accent-primary);
}

.highlight-border:nth-child(2) {
    border-top: 2px solid var(--accent-success);
}

/* Bottom Nav */
#bottom-nav {
    position: fixed;
    bottom: 0;
    width: 100%;
    max-width: 480px;
    height: 70px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(15, 23, 42, 0.85);
    border-top: 1px solid var(--glass-border);
    z-index: 100;
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.nav-item {
    background: none;
    border: none;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    transition: var(--transition);
    flex: 1;
}

.nav-item i {
    font-size: 1.25rem;
    margin-bottom: 2px;
}

.nav-item.active {
    color: var(--accent-primary);
}

.nav-item.active i {
    transform: translateY(-2px);
}

/* Scanner Button Special */
.scan-btn {
    transform: translateY(-20px);
}

.scan-btn-inner {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
    border: 4px solid var(--bg-base);
    transition: var(--transition);
}

.scan-btn-inner i {
    font-size: 1.5rem;
    margin: 0;
}

.nav-item.scan-btn:hover .scan-btn-inner {
    transform: scale(1.05);
}

/* Directory */
.business-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.business-card {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    cursor: pointer;
}

.business-img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    object-fit: cover;
    background: #2dd4bf; 
}

.business-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.business-info h3 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.business-score {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: rgba(139, 92, 246, 0.2);
    color: #c4b5fd;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 0.5rem;
    align-self: flex-start;
}

/* Profile Badge */
.profile-card {
    text-align: center;
    padding: 2rem 1.5rem;
    background: linear-gradient(180deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.9) 100%);
    border-top: 4px solid var(--accent-primary);
    overflow: hidden;
    position: relative;
}

.badge-header h2 {
    font-size: 1.25rem;
    margin-top: 0.5rem;
}

.badge-icon {
    font-size: 2.5rem;
    color: var(--accent-warning);
}

.avatar-placeholder {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    margin: 1.5rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    border: 4px solid var(--bg-base);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.user-id {
    font-family: monospace;
    font-size: 1.1rem;
    letter-spacing: 2px;
    color: #cbd5e1;
    margin-top: 0.5rem;
    background: rgba(0,0,0,0.2);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    display: inline-block;
}

/* Scanner Component */
.scanner-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    padding: 2rem 1.5rem;
}

.scanner-mock {
    width: 250px;
    height: 250px;
    border: 2px dashed rgba(255,255,255,0.2);
    border-radius: var(--radius-lg);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    overflow: hidden;
}

.camera-icon {
    font-size: 3rem;
    color: var(--text-secondary);
}

.scanner-line {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--accent-success);
    box-shadow: 0 0 10px var(--accent-success);
    top: 0;
    animation: scan 2s linear infinite;
}

@keyframes scan {
    0% { top: 0; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

/* Forms & Buttons & Modals */
.btn {
    width: 100%;
    padding: 1rem;
    border-radius: var(--radius-md);
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: white;
    border: 1px solid var(--glass-border);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
}

.btn:active {
    transform: scale(0.98);
}

.back-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    margin-bottom: 1.5rem;
}

/* Business detail */
.hero-image {
    width: 100%;
    height: 200px;
    border-radius: var(--radius-lg);
    object-fit: cover;
    margin-bottom: 1.5rem;
    background: #334155;
}
.video-placeholder {
    width: 100%;
    height: 200px;
    border-radius: var(--radius-lg);
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    position: relative;
    border: 1px solid rgba(255,255,255,0.1);
    cursor: pointer;
}
.video-placeholder i {
    font-size: 3rem;
    color: white;
    opacity: 0.8;
}

.detail-section {
    margin-bottom: 1.5rem;
}
.detail-section h3 { margin-bottom: 0.5rem; color: var(--text-primary); }

/* Modal */
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    animation: fadeIn 0.3s forwards;
}

.modal.hidden {
    display: none;
}

.modal-content {
    width: 100%;
    max-width: 400px;
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 1rem;
    margin-bottom: 1.25rem;
}

.close-btn {
    background: none; border: none; color: white;
    font-size: 1.5rem; cursor: pointer;
}

.modal-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.purchase-form {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.input-modern {
    width: 100%;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.1);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.input-modern:focus {
    border-color: var(--accent-primary);
}

/* Toast */
.toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: var(--gradient-success);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
    animation: slideDownToast 0.3s ease forwards;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.hidden { display: none !important; }