/* === Custom Properties === */
:root {
    --color-primary: #1a237e;
    --color-primary-light: #3949ab;
    --color-accent: #2979ff;
    --color-accent-hover: #2962ff;
    --color-white: #ffffff;
    --color-bg: #f8f9fa;
    --color-text: #212121;
    --color-text-light: #616161;
    --color-border: #e0e0e0;
    --color-success: #2e7d32;
    --color-error: #c62828;
    --max-width: 1140px;
    --header-height: 72px;
    --radius: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --transition: 0.2s ease;
}

/* === Reset === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-stack);
    color: var(--color-text);
    line-height: 1.6;
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

img, svg {
    display: block;
    max-width: 100%;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-accent-hover);
}

ul {
    list-style: none;
}

/* === Container === */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* === Header === */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--color-accent);
}

.nav-list {
    display: flex;
    gap: 8px;
}

.nav-list a {
    display: block;
    padding: 8px 16px;
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: var(--radius);
    transition: background var(--transition), color var(--transition);
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--color-accent);
    background: rgba(41, 121, 255, 0.08);
}

/* Hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-text);
}

/* === Hero === */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: 96px 24px;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.2;
    max-width: 720px;
    margin: 0 auto 24px;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 560px;
    margin: 0 auto 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

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

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

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

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    color: var(--color-white);
}

.btn-dark-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

/* === Section === */
.section {
    padding: 80px 24px;
}

.section-alt {
    background: var(--color-bg);
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 48px;
}

/* === Feature Grid === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.feature-card {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: var(--color-primary);
}

.feature-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* === Price Highlight === */
.price-highlight {
    text-align: center;
    padding: 64px 24px;
    background: var(--color-bg);
}

.price-highlight .price-value {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.price-highlight .price-unit {
    font-size: 1.2rem;
    color: var(--color-text-light);
    margin-top: 8px;
}

.price-highlight .price-note {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

/* === CTA Section === */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    text-align: center;
    padding: 80px 24px;
}

.cta-section h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-section p {
    opacity: 0.9;
    max-width: 500px;
    margin: 0 auto 32px;
    font-size: 1.1rem;
}

/* === Pricing Page === */
.pricing-card {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 48px;
    box-shadow: var(--shadow);
    max-width: 480px;
    margin: 0 auto;
    text-align: center;
}

.pricing-card .price-value {
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.pricing-card .price-unit {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.pricing-card .price-note {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 32px;
}

.pricing-features {
    text-align: left;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text);
}

.pricing-features li svg {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

.payment-methods {
    max-width: 600px;
    margin: 48px auto 0;
    text-align: center;
}

.payment-methods h3 {
    color: var(--color-primary);
    margin-bottom: 16px;
}

.payment-methods p {
    color: var(--color-text-light);
}

/* === Guide Page === */
.guide-section {
    max-width: 720px;
    margin: 0 auto;
}

.guide-section h2 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin: 48px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--color-border);
}

.guide-section h2:first-child {
    margin-top: 0;
}

.guide-section p,
.guide-section li {
    color: var(--color-text-light);
    margin-bottom: 12px;
}

.guide-section ol,
.guide-section ul {
    padding-left: 24px;
    margin-bottom: 24px;
}

.guide-section ol {
    list-style: decimal;
}

.guide-section ul {
    list-style: disc;
}

.guide-section code {
    background: var(--color-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.9em;
}

.guide-section pre {
    background: #1e1e2e;
    color: #cdd6f4;
    padding: 24px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin-bottom: 24px;
    font-size: 0.9rem;
    line-height: 1.5;
}

.guide-section pre code {
    background: none;
    padding: 0;
    color: inherit;
}

/* === Contact Page === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.contact-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-stack);
    font-size: 1rem;
    transition: border-color var(--transition);
    margin-bottom: 20px;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(41, 121, 255, 0.15);
}

.contact-form textarea {
    min-height: 160px;
    resize: vertical;
}

.contact-form .error-msg {
    color: var(--color-error);
    font-size: 0.85rem;
    margin-top: -16px;
    margin-bottom: 16px;
    display: none;
}

.contact-info h3 {
    color: var(--color-primary);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 20px;
}

.contact-info-item svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-info-item strong {
    display: block;
    margin-bottom: 2px;
}

.contact-info-item span,
.contact-info-item a {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* Form messages */
.form-success {
    background: #e8f5e9;
    color: var(--color-success);
    padding: 16px 24px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    font-weight: 500;
}

.form-error {
    background: #ffebee;
    color: var(--color-error);
    padding: 16px 24px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    font-weight: 500;
}

/* === Page Header === */
.page-header {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 56px 24px;
    text-align: center;
}

.page-header h1 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
}

.page-header p {
    opacity: 0.85;
    margin-top: 12px;
    font-size: 1.1rem;
}

/* === Footer === */
.site-footer {
    background: #0d1442;
    color: rgba(255,255,255,0.7);
    padding: 64px 24px 32px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.footer-brand .logo {
    color: var(--color-white);
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--color-white);
    font-size: 0.95rem;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links a {
    display: block;
    color: rgba(255,255,255,0.7);
    padding: 4px 0;
    font-size: 0.9rem;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-contact p,
.footer-contact a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 6px;
    display: block;
}

.footer-contact a:hover {
    color: var(--color-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
}

/* === Register Page === */
.register-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    max-width: var(--max-width);
    margin: 0 auto;
    align-items: start;
}

.register-benefits h3 {
    color: var(--color-primary);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.benefits-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 0.95rem;
}

.benefits-list li svg {
    width: 20px;
    height: 20px;
    color: var(--color-success);
    flex-shrink: 0;
}

/* === Auth Form === */
.auth-form-wrapper {
    max-width: 480px;
    margin: 0 auto;
}

/* === Dashboard === */
.dashboard-banner {
    padding: 16px 24px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.dashboard-banner-warning {
    background: #fff3e0;
    color: #e65100;
    border: 1px solid #ffcc80;
}

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

.dashboard-card {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

.dashboard-card h3 {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-border);
}

.dashboard-info dt {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 2px;
}

.dashboard-info dd {
    margin-bottom: 16px;
    font-weight: 500;
}

.dashboard-stat {
    text-align: center;
    padding: 20px 0;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    display: block;
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.dashboard-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    vertical-align: middle;
    margin-left: 8px;
}

.badge-success {
    background: #e8f5e9;
    color: var(--color-success);
}

.badge-warning {
    background: #fff3e0;
    color: #e65100;
}

.text-muted {
    color: var(--color-text-light);
}

.btn-link {
    background: none;
    border: none;
    color: var(--color-accent);
    cursor: pointer;
    font-size: 0.95rem;
    font-family: var(--font-stack);
    padding: 0;
    text-decoration: underline;
}

.btn-link:hover {
    color: var(--color-accent-hover);
}

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

/* === Oma Navigation === */
.oma-nav {
    display: flex;
    gap: 4px;
    margin-bottom: 32px;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 0;
}

.oma-nav-item {
    padding: 12px 20px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text-light);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color var(--transition), border-color var(--transition);
}

.oma-nav-item:hover {
    color: var(--color-primary);
}

.oma-nav-item.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* === Data Table === */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th,
.data-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.data-table tbody tr:hover {
    background: rgba(41, 121, 255, 0.04);
}

.msg-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* === Send Results === */
.send-results {
    margin-bottom: 24px;
}

.send-result {
    padding: 8px 16px;
    border-radius: var(--radius);
    margin-bottom: 4px;
    font-size: 0.9rem;
}

.send-result-ok {
    background: #e8f5e9;
    color: var(--color-success);
}

.send-result-error {
    background: #ffebee;
    color: var(--color-error);
}

/* === Send Form === */
.send-form-grid {
    max-width: 640px;
}

.field-help {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: -12px;
    margin-bottom: 16px;
}

/* === Filter Form === */
.filter-form {
    margin-bottom: 24px;
}

.filter-row {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.filter-row > div {
    flex: 1;
    min-width: 150px;
}

.filter-row label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.filter-row input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-stack);
    font-size: 0.9rem;
}

.filter-buttons {
    display: flex;
    gap: 8px;
}

/* === Inline Form === */
.inline-form {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.inline-form input,
.inline-form select {
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: var(--font-stack);
    font-size: 0.9rem;
    flex: 1;
    min-width: 120px;
}

/* === Address Book === */
.ab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ab-header h3 {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 16px;
}

/* === Responsive === */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-list {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 16px 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
    }

    .nav-list.open {
        display: flex;
    }

    .nav-list a {
        padding: 12px 16px;
    }

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

    .contact-grid,
    .register-grid,
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .oma-nav {
        flex-wrap: wrap;
    }

    .oma-nav-item {
        padding: 10px 14px;
        font-size: 0.85rem;
    }

    .filter-row {
        flex-direction: column;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .hero {
        padding: 64px 24px;
    }

    .section {
        padding: 56px 24px;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}