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

:root {
    --primary-color: #2563EB;
    --primary-dark: #1E40AF;
    --primary-light: #3B82F6;
    --background: #F8FAFC;
    --card-background: #FFFFFF;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --border-color: #E2E8F0;
    --success-color: #059669;
    --warning-color: #D97706;
    --error-color: #DC2626;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Dark theme */
body.dark-theme {
    --background: #0F172A;
    --card-background: #1E293B;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --border-color: #334155;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 6px rgba(0, 0, 0, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background);
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(37, 99, 235, 0.03) 0%, transparent 50%);
    min-height: 100vh;
    padding: 10px;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark-theme {
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 50%);
}

/* Language and Theme Switchers */
.switchers {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1000;
}

.switcher-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: var(--card-background);
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.switcher-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.switcher-btn .lang-icon {
    font-weight: 700;
    font-size: 0.9rem;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
    padding: 0;
}

/* Header */
.header {
    color: var(--text-primary);
    margin-bottom: 40px;
    padding: 30px 20px;
    border-bottom: 2px solid var(--border-color);
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    border: none;
    border-bottom: 2px solid var(--border-color);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 24px;
    flex-wrap: wrap;
}

.logo {
    max-width: 180px;
    height: auto;
    object-fit: contain;
    flex-shrink: 0;
    background: transparent;
}

.header-text {
    text-align: left;
    flex: 1;
}

.header h1 {
    font-size: 2.2rem;
    margin-bottom: 8px;
    font-weight: 700;
    color: var(--text-primary);
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Navigation */
.nav {
    display: flex;
    gap: 8px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
}

.nav::-webkit-scrollbar {
    display: none; /* Chrome, Safari */
}

.nav-btn {
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    white-space: nowrap;
    touch-action: manipulation;
}

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

.nav-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Pages */
.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Cards */
.card {
    background: var(--card-background);
    border-radius: 8px;
    padding: 40px;
    box-shadow: var(--shadow);
    margin-bottom: 32px;
    border: 1px solid var(--border-color);
    transition: box-shadow 0.2s ease, background-color 0.3s ease;
}

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

/* Intro Section */

/* Image Section */
.image-section {
    margin-bottom: 30px;
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.info-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    max-height: 400px;
}

.welcome-card {
    background: var(--card-background);
    border-radius: 8px;
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.intro-content {
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-color);
}

.intro-content h2 {
    font-size: 1.75rem;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.welcome-description {
    font-size: 1.05rem;
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: 0;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 32px;
    margin-bottom: 24px;
}

.features-vertical {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 32px;
    margin-bottom: 24px;
}

.features-box, .info-box {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 24px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.features-vertical .features-box,
.features-vertical .info-box {
    width: 100%;
}

.features-box:hover, .info-box:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.help-note {
    margin-top: 16px;
    padding: 12px;
    background: #F0F9FF;
    border-left: 3px solid var(--primary-color);
    border-radius: 4px;
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark-theme .help-note {
    background: #1E3A5F;
    color: #E0F2FE;
}

.features-box h3, .info-box h3 {
    font-size: 1.15rem;
    margin-bottom: 18px;
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.form-section h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.section-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.field-explanation {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 12px;
    padding: 10px;
    background: var(--background);
    border-radius: 4px;
    border-left: 3px solid var(--primary-color);
}

/* Prevent text size adjustment on iOS (prevents zoom on input focus) */
@media (max-width: 480px) {
    input[type="text"],
    input[type="number"],
    input[type="date"],
    select,
    textarea {
        font-size: 16px !important;
    }
}

.features-list, .steps-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.features-list li {
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
    color: var(--text-primary);
    font-size: 0.98rem;
    line-height: 1.6;
}

.features-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.1rem;
}

.steps-list li {
    padding: 12px 0;
    padding-left: 40px;
    position: relative;
    color: var(--text-primary);
    counter-increment: step-counter;
    font-size: 0.98rem;
    line-height: 1.6;
}

.steps-list {
    counter-reset: step-counter;
}

.steps-list li:before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 600;
    flex-shrink: 0;
}

.corporate-info {
    background: #F0F9FF;
    border: 1px solid #BAE6FD;
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 32px;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.cta-section {
    text-align: center;
    margin-top: 32px;
}

.page-header {
    margin-bottom: 32px;
}

.page-header h2 {
    font-size: 1.75rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 700;
}

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--card-background);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background: var(--background);
    border-color: var(--text-secondary);
}

/* Form */
.order-form {
    margin-top: 0;
}

.form-section {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.form-section:last-of-type {
    border-bottom: none;
    margin-bottom: 32px;
    padding-bottom: 0;
}

.form-section h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.section-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 28px;
}

.form-group label {
    display: block;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: all 0.2s ease;
    background: var(--card-background);
    font-family: inherit;
    color: var(--text-primary);
}

.form-group input[type="date"] {
    cursor: pointer;
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s ease;
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748B' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

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

/* Date Inputs */
.date-inputs {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1.2fr;
    gap: 12px;
}

.date-field {
    display: flex;
    flex-direction: column;
}

.date-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

.date-field input,
.date-field select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
}

.form-group input[type="text"]:focus,
.form-group input[type="date"]:focus,
.form-group input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input[type="text"]:invalid:not(:placeholder-shown),
.form-group input[type="date"]:invalid:not(:placeholder-shown),
.form-group input[type="number"]:invalid:not(:placeholder-shown),
.form-group select:invalid:not([value=""]) {
    border-color: var(--error-color);
}

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 25px;
    flex-wrap: wrap;
}

.form-actions button {
    flex: 1;
    min-width: 150px;
}

/* Order Summary */
.order-summary {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 20px;
    margin: 24px 0;
}

.order-summary h3 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 600;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.summary-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.summary-value {
    color: var(--text-primary);
    font-weight: 600;
}

.info-text {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.6;
}

/* Order Details */
.order-details {
    margin: 24px 0;
    padding: 24px;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.order-details h3 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 600;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.detail-item .label {
    font-weight: 600;
    color: var(--text-primary);
}

.detail-item .value {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.payment-section {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.payment-section h3 {
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
}

.payment-intro {
    margin-bottom: 24px;
}

.payment-steps {
    margin-bottom: 20px;
}

.payment-steps-list {
    margin: 15px 0;
    padding-left: 25px;
    color: var(--text-primary);
    line-height: 1.8;
}

.payment-steps-list li {
    margin-bottom: 10px;
}

.payment-note {
    background: #E0F2FE;
    border: 1px solid #BAE6FD;
    border-radius: 6px;
    padding: 15px;
    margin-top: 20px;
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body.dark-theme .payment-note {
    background: #1E3A5F;
    border-color: #3B82F6;
    color: #E0F2FE;
}

.payment-instruction {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.6;
}

.payment-confirmation-section {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.help-box {
    margin-top: 24px;
    padding: 16px;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.6;
}

/* Payment Details */
.payment-details {
    margin: 20px 0;
    padding: 20px;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.payment-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.payment-label {
    font-weight: 600;
    min-width: 120px;
    color: var(--text-primary);
}

.payment-value {
    flex: 1;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    color: var(--text-primary);
    background: var(--card-background);
    padding: 10px 15px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.payment-value.amount {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--success-color);
}

.copy-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.copy-btn:hover {
    background: var(--primary-dark);
}

.payment-amount {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 15px;
}

.warning-box {
    background: #FEF3C7;
    border: 1px solid #FCD34D;
    border-radius: 6px;
    padding: 16px;
    margin: 20px 0;
    color: #92400E;
    font-size: 0.95rem;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body.dark-theme .warning-box {
    background: #78350F;
    border-color: #FCD34D;
    color: #FEF3C7;
}

/* Purchases List */
.purchases-list {
    margin-top: 20px;
}

.purchase-item {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 16px;
    border-left: 3px solid var(--primary-color);
}

.purchase-item h3 {
    margin-bottom: 10px;
    color: var(--text-primary);
}

.purchase-item p {
    color: var(--text-secondary);
    margin: 5px 0;
}

.purchase-status {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 10px;
}

.purchase-status.pending {
    background: #FFF3CD;
    color: #856404;
}

.purchase-status.checking {
    background: #D1ECF1;
    color: #0C5460;
}

.purchase-status.completed {
    background: #D4EDDA;
    color: #155724;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.status-explanation {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 24px;
}

.status-explanation p {
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 500;
}

.status-explanation ul li {
    margin-bottom: 8px;
    line-height: 1.6;
}

/* Support */
.support-info {
    margin-top: 32px;
}

.support-item {
    margin-bottom: 24px;
    padding: 24px;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.support-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-left-color: var(--primary-dark);
}

.support-item:last-child {
    margin-bottom: 0;
}

.support-item strong {
    display: block;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.support-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 500;
    padding: 12px 20px;
    background: var(--card-background);
    border: 2px solid var(--primary-color);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.support-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.support-link:active {
    transform: scale(0.98);
}

/* Support page specific styles */
#support-page .card {
    position: relative;
    overflow: hidden;
}

#support-page .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

#support-page .page-header {
    text-align: center;
    margin-bottom: 40px;
}

#support-page .page-header h2 {
    font-size: 2rem;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#support-page .info-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
    text-align: center;
    line-height: 1.8;
}

/* Reviews */
.review-preview-section {
    margin-top: 40px;
}

.review-preview-card {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s ease;
    cursor: pointer;
}

.review-preview-card:hover {
    box-shadow: var(--shadow-hover);
}

.reviews-list {
    display: grid;
    gap: 20px;
}

.review-card {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    box-shadow: var(--shadow);
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.review-author {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.review-rating {
    color: #FBBF24;
    font-size: 1.1rem;
    letter-spacing: 2px;
    font-weight: 600;
    white-space: nowrap;
}

.review-text {
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.review-date {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.review-link-btn {
    background: transparent;
    border: none;
    color: var(--primary-color);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    padding: 8px 0;
    margin-top: 12px;
    transition: color 0.2s ease;
    text-align: left;
    width: 100%;
}

.review-link-btn:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--text-primary);
    color: white;
    padding: 16px 24px;
    border-radius: 8px;
    box-shadow: var(--shadow-hover);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
    max-width: 300px;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

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

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

/* Responsive - Mobile First Approach */

/* Extra Small devices (phones, 320px and up) */
@media (max-width: 480px) {
    body {
        padding: 8px;
    }

    .container {
        max-width: 100%;
    }

    .header {
        padding: 20px 12px;
        margin-bottom: 20px;
    }

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

    .subtitle {
        font-size: 0.9rem;
    }

    .nav {
        gap: 6px;
        padding-bottom: 15px;
        margin-bottom: 20px;
    }

    .nav-btn {
        padding: 10px 12px;
        font-size: 0.85rem;
    }

    .image-section {
        margin-bottom: 20px;
        border-radius: 6px;
    }

    .info-image {
        max-height: 250px;
    }

    .intro-content {
        margin-bottom: 24px;
        padding-bottom: 24px;
    }

    .intro-content h2 {
        font-size: 1.4rem;
        margin-bottom: 12px;
    }

    .welcome-description {
        font-size: 0.95rem;
    }

    .welcome-card {
        padding: 24px 16px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .features-vertical {
        gap: 20px;
        margin-top: 24px;
        margin-bottom: 20px;
    }

    .features-box, .info-box {
        padding: 20px 16px;
    }

    .card {
        padding: 20px 16px;
    }

    .page-header h2 {
        font-size: 1.5rem;
    }

    .page-header {
        margin-bottom: 20px;
    }

    .form-section {
        margin-bottom: 24px;
        padding-bottom: 24px;
    }

    .form-group {
        margin-bottom: 18px;
    }

    .form-group input[type="text"],
    .form-group input[type="number"],
    .form-group select {
        padding: 10px 14px;
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .date-inputs {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .date-field input,
    .date-field select {
        padding: 10px 12px;
    }

    .order-summary {
        padding: 16px;
    }

    .payment-details {
        padding: 16px;
    }

    .payment-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding: 12px 0;
    }

    .payment-value {
        width: 100%;
        word-break: break-all;
    }

    .copy-btn {
        width: 100%;
        padding: 10px;
    }

    .review-preview-card {
        padding: 20px 16px;
    }

    .review-card {
        padding: 20px 16px;
    }

    .purchase-item {
        padding: 16px;
    }

    .status-explanation {
        padding: 16px;
    }

    .toast {
        right: 10px;
        left: 10px;
        bottom: 20px;
        padding: 12px 16px;
        font-size: 0.9rem;
    }

    .btn-primary, .btn-secondary {
        padding: 12px 20px;
        font-size: 0.95rem;
        width: 100%;
    }
}

/* Small devices (landscape phones, 481px and up) */
@media (min-width: 481px) and (max-width: 768px) {
    body {
        padding: 12px;
    }

    .header {
        padding: 25px 15px;
    }

    .header h1 {
        font-size: 1.75rem;
    }

    .nav {
        gap: 8px;
    }

    .nav-btn {
        padding: 10px 16px;
    }

    .image-section {
        margin-bottom: 25px;
    }

    .info-image {
        max-height: 300px;
    }

    .intro-content h2 {
        font-size: 1.5rem;
    }

    .welcome-card {
        padding: 32px 24px;
    }

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

    .card {
        padding: 24px 20px;
    }

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

    .date-inputs {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .payment-item {
        flex-wrap: wrap;
    }

    .toast {
        right: 15px;
        left: 15px;
        max-width: calc(100% - 30px);
    }
}

/* Medium devices (tablets, 769px and up) */
@media (min-width: 769px) and (max-width: 1024px) {
    body {
        padding: 15px;
    }

    .container {
        max-width: 900px;
    }

    .image-section {
        margin-bottom: 30px;
    }

    .info-image {
        max-height: 350px;
    }

    .features-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .date-inputs {
        grid-template-columns: 1fr 1.5fr 1.2fr;
    }
}

/* Large devices (desktops, 1025px and up) */
@media (min-width: 1025px) {
    body {
        padding: 20px;
    }

    .container {
        max-width: 1000px;
    }
}

/* Common mobile styles (applies to all mobile) */
@media (max-width: 768px) {
    .switchers {
        top: 10px;
        right: 10px;
        gap: 8px;
    }

    .switcher-btn {
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .header-text {
        text-align: center;
    }

    .logo {
        max-width: 100px;
    }

    .nav {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 15px;
        margin-bottom: 25px;
    }

    .nav-btn {
        flex: 0 0 auto;
        min-width: auto;
        padding: 10px 16px;
    }

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

    .form-actions button {
        width: 100%;
    }

    .payment-label {
        min-width: auto;
        width: 100%;
    }

    .summary-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .detail-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .review-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .payment-amount {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* Landscape orientation adjustments */
@media (max-width: 768px) and (orientation: landscape) {
    .image-section {
        margin-bottom: 20px;
    }

    .info-image {
        max-height: 200px;
    }

}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn-primary, .btn-secondary, .copy-btn, .nav-btn {
        min-height: 44px; /* iOS recommended touch target */
    }

    .form-group input,
    .form-group select {
        min-height: 44px;
    }

    .review-link-btn {
        min-height: 44px;
        padding: 12px 0;
    }
}