:root {
    --color-primary: #ffd700;
    --color-primary-dark: #b8860b;
    --color-background: #0a1628;
    --color-background-alt: #1a2a4a;
    --color-surface: rgba(20, 35, 60, 0.8);
    --color-surface-light: rgba(30, 50, 80, 0.5);
    --color-text-primary: #e8eef5;
    --color-text-secondary: #a0b0cf;
    --color-text-tertiary: #7a8ba5;
    --color-text-hint: #94a3bf;
    --color-border: rgba(100, 130, 180, 0.3);
    --color-success: #22c55e;
    --color-error: #ef4444;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 20px;
    --space-xl: 32px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --font-size-xs: 12px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-2xl: 26px;
    --font-size-3xl: 34px;
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 6px 20px rgba(255, 215, 0, 0.3);
}

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

html {
    scroll-padding-top: 20px;
    scroll-behavior: smooth;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-alt) 50%, var(--color-background) 100%);
    min-height: 100vh;
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

img,
svg,
video,
canvas,
iframe {
    max-width: 100%;
    height: auto;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px;
}

header {
    text-align: center;
    padding: 32px 0 20px;
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 12px;
}

.logo {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: var(--shadow-glow);
}

h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: linear-gradient(90deg, var(--color-primary), #fff, var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
}

h2 {
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    margin-bottom: 16px;
    border-bottom: 2px solid rgba(255, 215, 0, 0.3);
    padding-bottom: 10px;
}

h3 {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    margin-top: 24px;
    margin-bottom: 12px;
}

p {
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    margin-bottom: 14px;
}

.subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 8px;
}

a {
    color: var(--color-primary);
}

ul {
    margin-left: 24px;
    margin-bottom: 18px;
}

li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 18px;
}

.site-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid transparent;
}

.site-nav a:hover,
.site-nav a:focus-visible {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

.site-nav a.active {
    background: rgba(255, 215, 0, 0.18);
    color: #fff;
    border-color: rgba(255, 215, 0, 0.5);
}

.btn,
.btn-back,
.primary-btn,
.secondary-btn,
.calculate-btn,
.reset-btn,
.pt-banner-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-back,
.secondary-btn,
.reset-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.2);
}

.primary-btn,
.calculate-btn,
.pt-banner-btn {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #0a1628;
    box-shadow: var(--shadow-glow);
}

.btn:hover,
.btn-back:hover,
.primary-btn:hover,
.secondary-btn:hover,
.calculate-btn:hover,
.reset-btn:hover,
.pt-banner-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:focus-visible,
.btn-back:focus-visible,
.primary-btn:focus-visible,
.secondary-btn:focus-visible,
.calculate-btn:focus-visible,
.reset-btn:focus-visible,
.pt-banner-btn:focus-visible {
    outline: 2px solid rgba(255, 215, 0, 0.6);
    outline-offset: 2px;
}

.content-card,
.card,
.info-section,
.calculator-card,
.section-card,
.stat-card,
.data-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
}

.content-card,
.section-card,
.info-section,
.card {
    padding: 32px;
    margin-bottom: 28px;
}

.stat-card,
.data-card {
    padding: 20px;
    background: var(--color-surface-light);
    box-shadow: var(--shadow-sm);
}

.ad-container {
    background: rgba(30, 50, 80, 0.3);
    border: 1px dashed rgba(100, 130, 180, 0.3);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
    margin: 20px 0;
    min-height: 90px;
}

.ad-container.large {
    min-height: 250px;
}

.ad-label {
    color: #6b7c94;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.notification {
    max-width: min(400px, calc(100vw - 40px)) !important;
    min-width: 0 !important;
    width: auto !important;
}

input,
select,
textarea {
    width: 100%;
    background: rgba(10, 20, 40, 0.6);
    border: 1px solid rgba(100, 130, 180, 0.4);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: rgba(255, 215, 0, 0.6);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.2);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0 28px;
    font-size: var(--font-size-base);
    background: rgba(20, 35, 60, 0.6);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    max-width: 100%;
    display: block;
    -webkit-overflow-scrolling: touch;
    box-shadow: var(--shadow-sm);
}

th,
td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid rgba(100, 130, 180, 0.2);
}

th {
    background: rgba(255, 215, 0, 0.15);
    color: var(--color-text-primary);
    font-weight: 600;
}

tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.02);
}

footer {
    text-align: center;
    color: #6b7c94;
    font-size: 12px;
    padding: 32px 20px;
}

footer a {
    color: var(--color-text-secondary);
    text-decoration: none;
    display: inline-block;
    font-size: 12px;
    line-height: 1.4;
    padding: 2px 4px;
}

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

@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 28px;
    }

    .content-card,
    .section-card,
    .info-section {
        padding: 24px;
    }

    .site-nav {
        gap: 8px;
    }
}