:root {
    --bg-color: #fafafa;
    --card-bg: #ffffff;
    --text-color: #171717;
    --text-muted: #666666;
    --primary-color: #000000;
    --primary-hover: #222222;
    --border-color: #e5e5e5;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.03), 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.04), 0 1px 8px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --bg-color: #0a0a0a;
    --card-bg: #121212;
    --text-color: #ededed;
    --text-muted: #a0a0a0;
    --primary-color: #ffffff;
    --primary-hover: #e5e5e5;
    --border-color: #262626;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.4), 0 1px 8px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.2s ease, color 0.2s ease;
}

/* Header */
header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    background-color: var(--card-bg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: opacity 0.15s ease;
}

.logo:hover {
    opacity: 0.85;
}

.logo img {
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.45rem 0.9rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--card-bg);
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-links a:hover {
    background-color: var(--bg-color);
    border-color: var(--text-color);
    color: var(--text-color);
}

.nav-links a.btn {
    /* Kept for compatibility but inherits base styling */
}

.nav-links a.btn:hover {
    background-color: var(--bg-color);
}

.nav-links a.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-color);
    border: 1px solid var(--primary-color);
}

.nav-links a.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: var(--bg-color);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.45rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: background-color 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background-color: var(--bg-color);
}

/* Main */
main {
    flex: 1;
    padding: 3rem 1.5rem;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 5rem 1rem 4rem 1rem;
    max-width: 700px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    letter-spacing: -1.2px;
    color: var(--text-color);
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2.25rem;
    line-height: 1.6;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.25rem;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.925rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-color);
    border: 1px solid var(--primary-color);
}

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

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 3rem;
}

@media (min-width: 680px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 900px) {
    .pricing-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.25rem;
    }
}

.pricing-card {
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    padding: 2.25rem 1.5rem 2rem 1.5rem;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.25s ease;
    box-shadow: var(--shadow-sm);
    min-height: 380px;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--text-color);
}

.pricing-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    letter-spacing: -0.3px;
}

.price {
    font-size: 1.9rem;
    font-weight: 800;
    margin-bottom: 1.75rem;
    letter-spacing: -0.8px;
    color: var(--text-color);
    line-height: 1.2;
}

.price span {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-muted);
    display: block;
    margin-top: 0.35rem;
    letter-spacing: 0;
}

.features {
    list-style: none;
    margin-bottom: 2.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    text-align: left;
}

.features li {
    font-size: 0.875rem;
    color: var(--text-muted);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    line-height: 1.4;
}

.features li::before {
    content: "✓";
    font-weight: bold;
    color: var(--text-color);
}

/* Forms */
.form-container {
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    margin-bottom: 2.5rem;
    width: 100%;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.45rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.form-group input {
    width: 100%;
    padding: 0.75rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 0.95rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--text-color);
    box-shadow: 0 0 0 3px var(--shadow-sm);
    background-color: var(--card-bg);
}

/* Tabs Navigation */
.tabs-nav {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    background: none;
    border: none;
    font-size: 1.05rem;
    cursor: pointer;
    color: var(--text-muted);
    padding: 0.75rem 0;
    transition: all 0.15s ease;
    position: relative;
}

.tab-btn.active {
    color: var(--text-color);
    font-weight: 600;
}

.tab-btn.active::after {
    content: "";
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--text-color);
}

/* Subscriptions Dashboard Cards */
.sub-card {
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 8px;
    background-color: var(--card-bg);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    box-shadow: var(--shadow-sm);
    transition: border-color 0.15s ease;
}

.sub-card:hover {
    border-color: var(--text-color);
}

.sub-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.sub-card-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.sub-card-badge {
    font-size: 0.75rem;
    font-weight: 500;
    background-color: var(--bg-color);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.copy-input-group {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.copy-input-group input {
    flex: 1;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 0.85rem;
    font-family: monospace;
}

/* Misc Utilities */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.hidden { display: none !important; }

/* Responsive Center Wrapper */
.auth-wrapper {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.action-buttons-group {
    display: flex;
    gap: 0.5rem;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
    /* Horizontal scrolling for tab bars to prevent name wrapping */
    .admin-nav {
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        justify-content: flex-start !important;
        padding-bottom: 0.5rem !important;
        margin-bottom: 1.5rem !important;
        gap: 0.75rem !important;
        border-bottom: 1px solid var(--border-color) !important;
        scrollbar-width: thin;
    }
    
    .admin-nav::-webkit-scrollbar {
        height: 3px;
    }
    .admin-nav::-webkit-scrollbar-thumb {
        background-color: var(--border-color);
        border-radius: 3px;
    }
    
    .admin-tab {
        font-size: 0.85rem !important;
        padding: 0.4rem 0.6rem !important;
        flex-shrink: 0 !important;
        white-space: nowrap !important;
    }

    .tabs-nav {
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        justify-content: flex-start !important;
        padding-bottom: 0.5rem !important;
        gap: 1rem !important;
        border-bottom: 1px solid var(--border-color) !important;
        scrollbar-width: thin;
    }
    
    .tabs-nav::-webkit-scrollbar {
        height: 3px;
    }
    .tabs-nav::-webkit-scrollbar-thumb {
        background-color: var(--border-color);
        border-radius: 3px;
    }

    .tab-btn {
        flex-shrink: 0 !important;
        white-space: nowrap !important;
        font-size: 0.95rem !important;
    }

    /* Reduce tab container padding */
    .tab-content > div {
        padding: 0.75rem 0.5rem !important;
    }

    /* Keep standard tables compact but scrollable horizontally */
    table {
        display: table !important;
        width: 100% !important;
        table-layout: auto !important;
        border-collapse: collapse !important;
    }
    
    thead {
        display: table-header-group !important;
    }
    
    tbody {
        display: table-row-group !important;
    }
    
    tr {
        display: table-row !important;
        border: none !important;
        border-bottom: 1px solid var(--border-color) !important;
        margin-bottom: 0 !important;
        padding: 0 !important;
        background-color: transparent !important;
    }
    
    th, td {
        display: table-cell !important;
        padding: 0.5rem 0.6rem !important;
        font-size: 0.78rem !important;
        line-height: 1.25 !important;
        text-align: left !important;
        white-space: nowrap !important; /* Prevent any wrapping of names/headers/IPs */
        word-break: normal !important;  /* Avoid breaking middle of words */
        position: static !important;
        width: auto !important;
    }

    th {
        font-weight: 700 !important;
        background-color: var(--card-bg) !important;
        color: var(--text-color) !important;
    }

    /* Hide traffic breakdown on mobile */
    .traffic-breakdown {
        display: none !important;
    }

    /* Remove column max-widths and truncation to show full names/emails */
    td[data-label="Email"], th[data-label="Email"] {
        max-width: none !important;
        overflow: visible !important;
        text-overflow: clip !important;
        white-space: nowrap !important;
    }

    td[data-label="Уникальный ID"] {
        max-width: none !important;
        overflow: visible !important;
        text-overflow: clip !important;
        white-space: nowrap !important;
    }

    td[data-label="Последний IP"] {
        max-width: none !important;
        overflow: visible !important;
        text-overflow: clip !important;
        white-space: nowrap !important;
    }

    td[data-label="Ссылка"] {
        max-width: 300px !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        white-space: nowrap !important;
    }

    td[data-label="User Agent"] {
        max-width: 200px !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        white-space: nowrap !important;
    }

    td[data-label="Действия"] {
        width: auto !important;
        max-width: none !important;
    }

    /* Horizontal action buttons on mobile since table is scrollable */
    .action-buttons-group {
        display: flex !important;
        flex-direction: row !important;
        gap: 0.35rem !important;
        align-items: center !important;
        width: auto !important;
        flex-wrap: nowrap !important;
    }
    
    .action-buttons-group .btn {
        width: auto !important;
        padding: 0.3rem 0.5rem !important;
        font-size: 0.72rem !important;
        line-height: 1.2 !important;
        margin: 0 !important;
        text-align: center !important;
        display: inline-flex !important;
        white-space: nowrap !important;
    }

    /* Copy input stack group */
    .copy-input-group {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .copy-input-group button {
        width: 100%;
    }
}