:root {
    --bg: #eef3f9;
    --surface: #ffffff;
    --surface-alt: #f7f9fc;

    --primary: #233f73;
    --primary-dark: #1c325b;
    --primary-soft: #dfe8f6;

    --accent: #e5d043;
    --accent-dark: #d0bb2c;

    --text: #1f2937;
    --text-soft: #475569;
    --text-muted: #6b7280;

    --border: #dbe4f0;
    --border-strong: #c8d5e6;

    --success-bg: #eaf8ef;
    --success-text: #1f7a43;

    --error-bg: #fff1f1;
    --error-text: #b42318;

    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 18px;

    --container: 1160px;

    --transition: 0.18s ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
}

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

button,
input,
textarea,
select {
    font: inherit;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.site-header .inner {
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.nav {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.nav a:not(.btn) {
    color: var(--text-soft);
    font-size: 14px;
    font-weight: 600;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
}

.nav a:not(.btn):hover {
    background: var(--surface-alt);
    color: var(--primary);
}

/* Typography */

h1,
h2,
h3,
h4 {
    margin-top: 0;
    margin-bottom: 12px;
    line-height: 1.15;
    color: var(--text);
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(34px, 5vw, 54px);
    font-weight: 800;
}

h2 {
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 800;
}

h3 {
    font-size: 22px;
    font-weight: 700;
}

h4 {
    font-size: 16px;
    font-weight: 700;
}

p {
    margin: 0 0 14px;
    color: var(--text-soft);
}

.small {
    font-size: 14px;
}

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

.text-accent {
    color: var(--accent-dark);
}

.center {
    text-align: center;
}

/* Buttons */

.btn,
button.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 10px;
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}

.btn:hover,
button.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--accent);
    color: #273140;
    border-color: var(--accent);
}

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

.btn-secondary {
    background: #ffffff;
    color: var(--text);
    border-color: var(--border-strong);
}

.btn-secondary:hover {
    background: var(--surface-alt);
    border-color: var(--primary-soft);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary-soft);
}

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

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 24px;
}

/* Hero */

.hero {
    padding: 56px 0 44px;
    background: linear-gradient(to bottom, #f8fbff 0%, #eef3f9 100%);
    border-bottom: 1px solid var(--border);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
    gap: 28px;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    margin-bottom: 18px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
}

/* Cards */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 26px;
}

.form-card {
    max-width: 760px;
    margin: 0 auto;
}

/* Sections */

.section {
    padding: 40px 0;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

/* Lists */

.feature-list,
.check-list,
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list,
.check-list {
    margin-top: 18px;
    display: grid;
    gap: 10px;
}

.feature-list li,
.check-list li {
    position: relative;
    padding: 13px 14px 13px 42px;
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 15px;
}

.feature-list li::before,
.check-list li::before {
    content: "";
    position: absolute;
    left: 14px;
    top: 15px;
    width: 14px;
    height: 14px;
    border-radius: 4px;
    background: var(--accent);
}

/* Price */

.price-box {
    margin-top: 14px;
    padding: 18px;
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.price-line {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    flex-wrap: wrap;
}

.price {
    font-size: clamp(34px, 4vw, 46px);
    line-height: 1;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.03em;
}

.price-note {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 3px;
}

/* Forms */

form {
    width: 100%;
}

.form-group {
    margin-bottom: 16px;
}

label {
    display: block;
    margin-bottom: 7px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
}

input,
textarea,
select {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    background: #ffffff;
    color: var(--text);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}

input::placeholder,
textarea::placeholder {
    color: #94a3b8;
}

input:focus,
textarea:focus,
select:focus {
    border-color: #9cb3d8;
    box-shadow: 0 0 0 3px rgba(35, 63, 115, 0.08);
}

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

/* Tables */

table {
    width: 100%;
    border-collapse: collapse;
}

table th,
table td {
    padding: 12px 0;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

table th {
    width: 38%;
    color: var(--text-muted);
    font-weight: 700;
    padding-right: 18px;
}

table td {
    color: var(--text);
}

table tr:last-child th,
table tr:last-child td {
    border-bottom: 0;
}

/* Alerts */

.alert {
    padding: 13px 14px;
    margin-bottom: 18px;
    border-radius: 10px;
    font-size: 14px;
    border: 1px solid transparent;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: #cdeed9;
}

.alert-error {
    background: var(--error-bg);
    color: var(--error-text);
    border-color: #f8cdcd;
}

/* Content blocks */

.content {
    line-height: 1.8;
}

.content p {
    color: var(--text-soft);
}

.content p + p {
    margin-top: 14px;
}

/* Footer */

.site-footer {
    margin-top: 60px;
    padding: 42px 0 26px;
    background: #ffffff;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.footer-links li + li {
    margin-top: 8px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-soft);
}

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

.footer-bottom {
    padding-top: 16px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    color: var(--text-muted);
    font-size: 13px;
}

/* Utilities */

.site-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-shell main {
    flex: 1 0 auto;
}

/* Responsive */

@media (max-width: 980px) {
    .hero-grid,
    .grid-3,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .site-header .inner {
        min-height: auto;
        padding: 14px 0;
        flex-direction: column;
        align-items: flex-start;
    }

    .nav {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }

    .card {
        padding: 20px;
        border-radius: 14px;
    }

    .hero {
        padding: 40px 0 30px;
    }

    .btn,
    button.btn {
        width: 100%;
    }

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

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

.admin-wrap {
    padding: 36px 0 60px;
}

.admin-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.admin-grid {
    display: grid;
    gap: 20px;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
}

.status-pending {
    background: #fff7e6;
    color: #9a6700;
}

.status-paid {
    background: #eaf8ef;
    color: #1f7a43;
}

.status-failed,
.status-expired,
.status-canceled {
    background: #fff1f1;
    color: #b42318;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.kpi-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
}

.kpi-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.kpi-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.actions-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

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

.detail-list {
    display: grid;
    gap: 12px;
}

.detail-item {
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.detail-item:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.detail-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.detail-value {
    color: var(--text);
    font-weight: 600;
    word-break: break-word;
}

.admin-search {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.admin-search input,
.admin-search select {
    max-width: 260px;
}

@media (max-width: 900px) {
    .kpi-grid,
    .detail-grid {
        grid-template-columns: 1fr;
    }
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.blog-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.blog-card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    height: 100%;
}

.blog-card h3 {
    font-size: 20px;
    margin-bottom: 0;
}

.blog-card p {
    margin-bottom: 0;
}

.blog-meta {
    font-size: 13px;
    color: var(--text-muted);
}

.blog-image {
    aspect-ratio: 16 / 9;
    background: var(--primary-soft);
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.editor-textarea {
    min-height: 360px;
}

.admin-table-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.status-draft {
    background: #eef2f7;
    color: #475569;
}

.status-published {
    background: #eaf8ef;
    color: #1f7a43;
}

.article-wrap {
    max-width: 860px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 24px;
}

.article-content {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text);
}

.article-content p {
    color: var(--text);
    margin-bottom: 18px;
}

.article-content h2,
.article-content h3 {
    margin-top: 32px;
}

.article-content ul,
.article-content ol {
    margin: 0 0 18px 24px;
}

.article-content li {
    margin-bottom: 8px;
}

@media (max-width: 980px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
}