* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-light: #4c87fe;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --success-color: #22c55e;
    --warning-color: #f97316;
    --error-color: #ef4444;
    --neutral-50: #f9fafb;
    --neutral-100: #f3f4f6;
    --neutral-200: #e5e7eb;
    --neutral-300: #d1d5db;
    --neutral-400: #9ca3af;
    --neutral-500: #6b7280;
    --neutral-600: #4b5563;
    --neutral-700: #374151;
    --neutral-800: #1f2937;
    --neutral-900: #111827;
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--neutral-800);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--neutral-200);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 28px;
    color: var(--secondary-color);
}

.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    text-decoration: none;
    color: var(--neutral-600);
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover {
    background: var(--neutral-100);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.nav-link.logout-btn {
    color: var(--error-color);
}

.nav-link.logout-btn:hover {
    background: #fef2f2;
    color: var(--error-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 24px;
    height: 3px;
    background: var(--neutral-600);
    border-radius: 2px;
    transition: var(--transition);
}

/* Dropdown Menu Styles */
.nav-dropdown {
    position: relative;
}

.dropdown-btn {
    background: none;
    color: var(--neutral-600);
    border: none;
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-btn:hover {
    color: var(--primary-color);
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #fff;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 10;
    border-radius: 10px;
    padding: 0.5rem 0;
    top: 100%;
    left: 0;
}

.nav-dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content .nav-link {
    color: var(--neutral-800);
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
}

.dropdown-content .nav-link:hover {
    background-color: var(--neutral-100);
    color: var(--primary-color);
}


/* Main Content */
.main-content {
    margin-top: 64px;
    padding: 32px 24px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Updated Page Header */
.page-header {
    margin-bottom: 32px;
    text-align: center;
    padding-bottom: 2rem;
}

.page-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: white;
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.page-header p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
}

.welcome-message {
    font-size: 2.25rem;
    font-weight: 600;
    color: #fff;
    margin-top: 1rem;
    margin-bottom: 1.25rem;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.2);
}

.points-display {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 500;
    color: #fff;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.points-display i {
    color: var(--accent-color);
    font-size: 20px;
}

/* Cards */
.card {
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    padding: 24px 24px 16px;
    border-bottom: 1px solid var(--neutral-100);
}

.card-header h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--neutral-800);
    display: flex;
    align-items: center;
    gap: 12px;
}

.card-header i {
    color: var(--primary-color);
}

/* Dashboard */
.dashboard-grid-container {
    display: grid;
    gap: 24px;
}

.dashboard-grid-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.dashboard-grid-full-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.stats-card, .quick-actions, .more-features {
    grid-column: span 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding: 24px;
}

.stat-item {
    text-align: center;
    padding: 16px;
    background: var(--gradient-primary);
    border-radius: 12px;
    color: white;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

/* Quick Actions */
.action-buttons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    padding: 1rem;
}

.action-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 16px;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1rem;
    border: none;
    border-radius: 15px;
    background-color: var(--neutral-100);
    color: var(--neutral-800);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: 600;
}

.action-btn i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.action-btn span {
    font-size: 0.9rem;
    font-weight: 600;
}

.action-btn:hover {
    transform: scale(1.05);
    background: var(--gradient-primary);
    box-shadow: var(--shadow-md);
    color: white;
}

.action-btn:hover i {
    color: white;
}

.recent-activity {
    grid-column: span 1;
}

.activity-list {
    padding: 24px;
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--neutral-100);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
}

.activity-icon.qr_scan {
    background: var(--success-color);
}

.activity-icon.coupon_redeem {
    background: var(--warning-color);
}

.activity-details {
    flex: 1;
}

.activity-description {
    font-weight: 500;
    color: var(--neutral-800);
    margin-bottom: 4px;
}

.activity-time {
    font-size: 14px;
    color: var(--neutral-500);
}

.activity-points {
    font-weight: 600;
    font-size: 18px;
}

.activity-points.positive {
    color: var(--success-color);
}

.activity-points.negative {
    color: var(--warning-color);
}

/* Scanner */
.scanner-container {
    display: grid;
    gap: 24px;
    max-width: 600px;
    margin: 0 auto;
}

.scanner-card {
    padding: 24px;
    text-align: center;
}

.qr-reader {
    width: 100%;
    max-width: 400px;
    margin: 0 auto 24px;
    border-radius: 12px;
    overflow: hidden;
    background: var(--neutral-100);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scanner-controls {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.scanner-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.scanner-btn.secondary {
    background: var(--neutral-200);
    color: var(--neutral-700);
}

.scanner-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.demo-section {
    padding: 24px;
    text-align: center;
}

.demo-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--gradient-secondary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 24px;
}

.demo-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.demo-qr-container {
    background: white;
    padding: 24px;
    border: 2px dashed var(--neutral-300);
    border-radius: 12px;
    margin-top: 16px;
}

.demo-qr-container img {
    max-width: 200px;
    height: auto;
}

/* Coupons */
.coupons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.coupon-card {
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    background: var(--coupon-bg-color, #f3e8ff);
    border: 1px solid var(--coupon-border-color, #d8b4fe);
}

.coupon-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.coupon-image {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.coupon-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.coupon-header {
    text-align: center;
    margin-bottom: 1rem;
}

.coupon-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--coupon-header-color, #581c87);
}

.coupon-points {
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--coupon-header-color, #581c87);
}

.coupon-body {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.coupon-description {
    color: var(--neutral-600);
    line-height: 1.5;
    flex-grow: 1;
    margin-bottom: 1rem;
}

.coupon-btn {
    width: 100%;
    padding: 12px;
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    background-color: var(--coupon-btn-bg-color, #9333ea);
    margin-top: auto;
}

.coupon-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

/* Coupon Themes */
.coupon-card.theme-default {
    --coupon-bg-color: #f0fdf4;
    --coupon-border-color: #bbf7d0;
    --coupon-header-color: #166534;
    --coupon-btn-bg-color: #22c55e;
}

.coupon-card.theme-donation {
    --coupon-bg-color: #e0f2fe;
    --coupon-border-color: #bae6fd;
    --coupon-header-color: #0c4a6e;
    --coupon-btn-bg-color: #0ea5e9;
}

.coupon-card.theme-product {
    --coupon-bg-color: #fff7ed;
    --coupon-border-color: #fed7aa;
    --coupon-header-color: #9a3412;
    --coupon-btn-bg-color: #f97316;
}

.coupon-card.theme-special {
    --coupon-bg-color: #fdf2f8;
    --coupon-border-color: #fbcfe8;
    --coupon-header-color: #9d174d;
    --coupon-btn-bg-color: #ec4899;
}

/* History */
.history-container {
    max-width: 800px;
    margin: 0 auto;
}

.history-list {
    padding: 24px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--neutral-100);
}

.history-item:last-child {
    border-bottom: none;
}

.history-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
}

.history-details {
    flex: 1;
}

.history-description {
    font-weight: 500;
    color: var(--neutral-800);
    margin-bottom: 4px;
}

.history-time {
    font-size: 14px;
    color: var(--neutral-500);
}

.history-points {
    font-weight: 600;
    font-size: 18px;
}

.history-points.positive {
    color: var(--success-color);
}

.history-points.negative {
    color: var(--warning-color);
}

/* Auth Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 20px;
    padding: 0;
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.auth-container {
    padding: 40px 32px;
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-icon {
    font-size: 48px;
    color: var(--secondary-color);
    margin-bottom: 16px;
}

.auth-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--neutral-800);
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--neutral-600);
    line-height: 1.5;
}

.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    background: var(--neutral-100);
    padding: 4px;
    border-radius: 12px;
}

.tab-btn {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--neutral-600);
}

.tab-btn.active {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--neutral-700);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--neutral-200);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    background: white;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.auth-btn {
    width: 100%;
    padding: 14px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.auth-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-toggle-icon {
    position: absolute;
    right: 15px;
    cursor: pointer;
    color: var(--neutral-400);
}

.password-toggle-icon:hover {
    color: var(--primary-color);
}

.form-group-extra {
    text-align: right;
    margin-top: -10px;
    margin-bottom: 20px;
}

.form-group-extra a {
    font-size: 0.9em;
    color: var(--primary-color);
    text-decoration: none;
}

.redeem-info {
    text-align: center;
    margin: 2rem 0;
}

.redeem-info h3 {
    margin-bottom: 1rem;
    color: var(--neutral-700);
}

.redeem-code {
    background: var(--neutral-100);
    border: 2px dashed var(--primary-color);
    padding: 1.5rem;
    font-size: 2rem;
    font-weight: bold;
    letter-spacing: 4px;
    color: var(--neutral-800);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

#redeemCodeModal {
    z-index: 9999;
}

.confirm-modal-content {
    max-width: 400px;
    text-align: center;
    padding: 2rem;
}

.confirm-modal-content h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--neutral-800);
}

.confirm-modal-content p {
    margin-bottom: 1.5rem;
    color: var(--neutral-600);
    line-height: 1.6;
}

.confirm-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.confirm-buttons .auth-btn {
    flex: 1;
    margin-top: 0;
}

/* Loading & Toast */
.loading-overlay {
    display: none;
    position: fixed;
    z-index: 2000;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    text-align: center;
    color: var(--primary-color);
}

.loading-spinner i {
    font-size: 32px;
    margin-bottom: 16px;
}

.loading-spinner p {
    font-weight: 500;
}

.toast-container {
    position: fixed;
    top: 80px;
    right: 24px;
    z-index: 2500;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: white;
    color: var(--neutral-800);
    padding: 16px 20px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 350px;
    animation: toastSlideIn 0.3s ease-out;
    border-left: 4px solid var(--primary-color);
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.error {
    border-left-color: var(--error-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

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

.toast-icon {
    font-size: 18px;
}

.toast.success .toast-icon {
    color: var(--success-color);
}

.toast.error .toast-icon {
    color: var(--error-color);
}

.toast.warning .toast-icon {
    color: var(--warning-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 16px;
        box-shadow: var(--shadow-lg);
        border-radius: 0 0 12px 12px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-link {
        width: 100%;
        justify-content: flex-start;
        padding: 12px 16px;
    }

    .main-content {
        padding: 24px 16px;
    }

    .dashboard-grid-container {
        grid-template-columns: 1fr;
    }

    .dashboard-grid-row {
        grid-template-columns: 1fr;
    }

    .stats-card, .quick-actions, .more-features {
        grid-column: span 1;
    }

    .recent-activity {
        grid-column: span 1;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .action-buttons-grid {
        grid-template-columns: 1fr;
    }

    .page-header h1 {
        font-size: 24px;
    }

    .page-header p {
        font-size: 16px;
    }

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

    .modal-content {
        width: 95%;
        margin: 20px;
    }

    .auth-container {
        padding: 32px 24px;
    }

    .toast-container {
        right: 16px;
        left: 16px;
    }

    .toast {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 16px;
    }

    .main-content {
        padding: 16px 12px;
    }

    .card {
        border-radius: 12px;
    }

    .modal-content {
        border-radius: 16px;
    }

    .auth-container {
        padding: 24px 20px;
    }

    .scanner-container {
        gap: 16px;
    }

    .qr-reader {
        min-height: 150px;
    }
}