/* ==========================================================================
   THEME VARIABLES — Персональный сервис
   Dark theme (default, Remnawave-style) + Light theme
   All colors are defined here. Templates use only var(--...) references.
   ========================================================================== */

/* ===== DARK THEME (default) — Remnawave style ===== */
:root {
    /* Backgrounds */
    --bg-body: #0d1117;
    --bg-sidebar: #0c1018;
    --bg-card: #161b22;
    --bg-card-hover: #1c2333;
    --bg-input: #161b22;
    --bg-input-focus: #1c2333;
    --bg-overlay: rgba(13,17,23,0.9);
    --bg-dropdown: #1c2333;
    --bg-table-head: #131920;
    --bg-code: rgba(255,255,255,0.06);
    --bg-hover: rgba(255,255,255,0.04);
    --bg-navbar: rgba(12,16,24,0.92);
    --bg-footer: rgba(255,255,255,0.02);
    --bg-active-nav: linear-gradient(135deg, rgba(45,212,191,0.12), rgba(167,139,250,0.08));

    /* Borders */
    --border-glow: rgba(45,212,191,0.2);
    --border-dim: rgba(255,255,255,0.06);
    --border-subtle: rgba(255,255,255,0.08);
    --border-input: rgba(255,255,255,0.12);
    --border-hover: rgba(255,255,255,0.14);
    --border-outline-btn: rgba(255,255,255,0.15);

    /* Accent */
    --accent-cyan: #2dd4bf;
    --accent-purple: #a78bfa;
    --gradient-primary: linear-gradient(135deg, #2dd4bf, #a78bfa);
    --gradient-step-1: linear-gradient(135deg, #00b4d8, #2dd4bf);
    --gradient-step-2: linear-gradient(135deg, #667eea, #764ba2);
    --gradient-step-3: linear-gradient(135deg, #f472b6, #ec4899);
    --gradient-step-4: linear-gradient(135deg, #34d399, #06b6d4);
    --accent-cyan-rgb: 45,212,191;
    --accent-purple-rgb: 167,139,250;

    /* Text */
    --text-main: #e6edf3;
    --text-muted: #7d8590;
    --text-heading: #f0f6fc;
    --text-on-accent: #ffffff;
    --text-link: #2dd4bf;
    --text-white: #ffffff;
    --text-placeholder: #4a5568;
    --text-section: #4a5568;

    /* Status colors */
    --color-success: #34d399;
    --color-success-rgb: 52,211,153;
    --color-danger: #f87171;
    --color-danger-rgb: 248,113,113;
    --color-warning: #fbbf24;
    --color-warning-rgb: 251,191,36;
    --color-info: #38bdf8;
    --color-info-rgb: 56,189,248;
    --color-pink: #f472b6;
    --color-pink-rgb: 244,114,182;

    /* Shadows */
    --shadow-card: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-sidebar: 1px 0 6px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 15px rgba(45,212,191,0.1);
    --shadow-btn-hover: 0 8px 25px rgba(45,212,191,0.25);
    --shadow-nav-hover: 0 6px 20px rgba(45,212,191,0.3);

    /* Scrollbar */
    --scrollbar-track: rgba(255,255,255,0.03);
    --scrollbar-thumb: rgba(45,212,191,0.18);
    --scrollbar-thumb-hover: rgba(45,212,191,0.35);

    /* Layout */
    --sidebar-w: 260px;
    --sidebar-w-admin: 250px;

    /* Special */
    --btn-close-filter: invert(1) grayscale(100%) brightness(200%);
    --accordion-arrow-filter: invert(1) brightness(0.7);
    --checkbox-bg: rgba(255,255,255,0.1);
    --checkbox-border: rgba(255,255,255,0.2);
    --progress-bg: rgba(255,255,255,0.06);

    /* Auth pages */
    --bg-auth-card: rgba(22,27,34,0.85);
    --bg-auth-social: rgba(255,255,255,0.92);
    --text-auth-social: #1a202c;
    --shadow-auth-social-hover: 0 4px 20px rgba(255,255,255,0.15);
}


/* ===== LIGHT THEME ===== */
[data-theme="light"] {
    /* Backgrounds */
    --bg-body: #f8fafc;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-input: #ffffff;
    --bg-input-focus: #ffffff;
    --bg-overlay: rgba(248,250,252,0.92);
    --bg-dropdown: #ffffff;
    --bg-table-head: #f1f5f9;
    --bg-code: rgba(0,0,0,0.04);
    --bg-hover: rgba(0,0,0,0.03);
    --bg-navbar: rgba(255,255,255,0.95);
    --bg-footer: rgba(0,0,0,0.02);
    --bg-active-nav: linear-gradient(135deg, rgba(8,145,178,0.1), rgba(124,58,237,0.06));

    /* Borders */
    --border-glow: rgba(8,145,178,0.25);
    --border-dim: #e2e8f0;
    --border-subtle: #e2e8f0;
    --border-input: #cbd5e1;
    --border-hover: #cbd5e1;
    --border-outline-btn: #cbd5e1;

    /* Accent */
    --accent-cyan: #0891b2;
    --accent-purple: #7c3aed;
    --gradient-primary: linear-gradient(135deg, #0891b2, #7c3aed);
    --gradient-step-1: linear-gradient(135deg, #0e9594, #0891b2);
    --gradient-step-2: linear-gradient(135deg, #4f46e5, #6d28d9);
    --gradient-step-3: linear-gradient(135deg, #db2777, #be185d);
    --gradient-step-4: linear-gradient(135deg, #059669, #0891b2);
    --accent-cyan-rgb: 8,145,178;
    --accent-purple-rgb: 124,58,237;

    /* Text */
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-heading: #0f172a;
    --text-on-accent: #ffffff;
    --text-link: #0891b2;
    --text-white: #ffffff;
    --text-placeholder: #94a3b8;
    --text-section: #94a3b8;

    /* Status colors */
    --color-success: #059669;
    --color-success-rgb: 5,150,105;
    --color-danger: #dc2626;
    --color-danger-rgb: 220,38,38;
    --color-warning: #d97706;
    --color-warning-rgb: 217,119,6;
    --color-info: #0284c7;
    --color-info-rgb: 2,132,199;
    --color-pink: #db2777;
    --color-pink-rgb: 219,39,119;

    /* Shadows */
    --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sidebar: 1px 0 3px rgba(0,0,0,0.06);
    --shadow-glow: 0 0 10px rgba(8,145,178,0.08);
    --shadow-btn-hover: 0 6px 20px rgba(8,145,178,0.2);
    --shadow-nav-hover: 0 4px 12px rgba(8,145,178,0.15);

    /* Scrollbar */
    --scrollbar-track: rgba(0,0,0,0.03);
    --scrollbar-thumb: rgba(0,0,0,0.12);
    --scrollbar-thumb-hover: rgba(0,0,0,0.22);

    /* Special */
    --btn-close-filter: none;
    --accordion-arrow-filter: none;
    --checkbox-bg: #ffffff;
    --checkbox-border: #cbd5e1;
    --progress-bg: #e2e8f0;

    /* Auth pages */
    --bg-auth-card: rgba(255,255,255,0.95);
    --bg-auth-social: #f1f5f9;
    --text-auth-social: #1e293b;
    --shadow-auth-social-hover: 0 4px 20px rgba(0,0,0,0.1);
}

/* ==== Shared utility classes (work in both themes) ==== */
.error-code { color: var(--accent-cyan); }
.error-code-500 { color: var(--color-danger); }
.linkified-url { color: var(--accent-cyan); word-break: break-all; }
.linkified-user-id { color: var(--accent-cyan); text-decoration: none; }

/* Tinted-action buttons / badges. Used widely in admin tables to indicate
   the semantic of a row action (info/success/warn/danger). */
.btn-tint {
    border-radius: 8px;
    border: 1px solid;
    font-weight: 500;
}
.btn-tint-info {
    background: rgba(var(--color-info-rgb), 0.15);
    color: var(--color-info);
    border-color: rgba(var(--color-info-rgb), 0.3);
}
.btn-tint-success {
    background: rgba(var(--color-success-rgb), 0.15);
    color: var(--color-success);
    border-color: rgba(var(--color-success-rgb), 0.3);
}
.btn-tint-success-strong {
    background: rgba(var(--color-success-rgb), 0.15);
    color: var(--color-success);
    border-color: rgba(var(--color-success-rgb), 0.3);
    font-weight: 600;
}
.btn-tint-warning {
    background: rgba(var(--color-warning-rgb), 0.15);
    color: var(--color-warning);
    border-color: rgba(var(--color-warning-rgb), 0.3);
}
.btn-tint-purple {
    background: rgba(var(--accent-purple-rgb), 0.15);
    color: var(--accent-purple);
    border-color: rgba(var(--accent-purple-rgb), 0.3);
}
.btn-tint-danger {
    background: rgba(var(--color-danger-rgb), 0.15);
    color: var(--color-danger);
    border-color: rgba(var(--color-danger-rgb), 0.3);
}
.btn-tint-danger-strong {
    background: rgba(var(--color-danger-rgb), 0.25);
    color: var(--color-danger);
    border-color: rgba(var(--color-danger-rgb), 0.5);
}
.tag-pill {
    display: inline-block;
    background: rgba(var(--accent-cyan-rgb), 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(var(--accent-cyan-rgb), 0.2);
    border-radius: 6px;
    padding: 2px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    margin: 2px;
}
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
}
.modal-overlay.is-open { display: flex; }

/* Inside modals: secondary cancel button + submit button. */
.modal-cancel-btn {
    background: var(--border-dim);
    color: var(--text-muted);
    border: 0;
    border-radius: 8px;
    padding: 8px 16px;
}
.modal-submit-btn {
    border-radius: 8px;
    padding: 8px 16px;
}

/* Compact action buttons used inside admin tables/cards. */
.ud-action-sm { font-size: 0.78rem; }

/* Cyan-tinted link button used in user_detail "Actions" sidebar. */
.support-link-btn {
    background: var(--border-glow);
    color: var(--accent-cyan);
    border: 1px solid rgba(var(--accent-cyan-rgb), 0.3);
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    padding: 8px;
}

/* Inline-code style used to show truncated VPN key strings in admin tables. */
.key-value-pill {
    color: var(--accent-cyan);
    background: rgba(var(--accent-cyan-rgb), 0.1);
    padding: 2px 8px;
    border-radius: 6px;
}

/* Danger-tinted card-block (for preflight failures, destructive panels). */
.card-block-danger {
    border-color: rgba(var(--color-danger-rgb), 0.4);
    background: rgba(var(--color-danger-rgb), 0.05);
}

/* News article hero image: subtle dark mat behind the picture. */
.news-hero-img {
    width: 100%;
    max-height: 300px;
    object-fit: contain;
    background: var(--bg-overlay);
    border-bottom: 1px solid var(--border-dim);
}

/* Cyan-tinted info alert (used on register page for referral hint). */
.alert-tint-cyan {
    background: rgba(var(--accent-cyan-rgb), 0.1);
    border: 1px solid rgba(var(--accent-cyan-rgb), 0.2);
    color: var(--accent-cyan);
    font-size: 0.85rem;
}

/* Google brand icon — accepted hardcoded brand color, isolated to one class. */
.icon-google { color: #4285f4; }

/* Warning-tinted alert + tight inline button used in account/buy banner. */
.alert-tint-warning {
    background: rgba(var(--color-warning-rgb), 0.1);
    border: 1px solid rgba(var(--color-warning-rgb), 0.3);
    border-radius: 12px;
    color: var(--color-warning);
    padding: 16px;
}
.btn-tint-warning-strong {
    background: rgba(var(--color-warning-rgb), 0.2);
    color: var(--color-warning);
    border: 1px solid rgba(var(--color-warning-rgb), 0.4);
    border-radius: 8px;
}

/* Support-panel cyan utility tints used for "view as user" banner + buttons. */
.view-as-user-banner {
    padding: 8px 16px;
    background: rgba(var(--accent-cyan-rgb), 0.08);
    border-bottom: 1px solid rgba(var(--accent-cyan-rgb), 0.25);
    color: var(--accent-cyan);
    font-size: 0.78rem;
}
.btn-tint-cyan {
    background: rgba(var(--accent-cyan-rgb), 0.12);
    color: var(--accent-cyan);
    border: 1px solid rgba(var(--accent-cyan-rgb), 0.3);
}
.btn-tint-cyan-soft {
    background: rgba(var(--accent-cyan-rgb), 0.15);
    color: var(--accent-cyan);
    border: 1px solid rgba(var(--accent-cyan-rgb), 0.3);
    border-radius: 6px;
    font-size: 0.75rem;
}
.support-action-link {
    background: rgba(var(--accent-cyan-rgb), 0.15);
    color: var(--accent-cyan);
    border: 1px solid rgba(var(--accent-cyan-rgb), 0.3);
    text-decoration: none;
    display: block;
    text-align: center;
    border-radius: 8px;
    font-weight: 600;
}

/* Empty-state placeholder used in support-panel side cards. */
.sp-empty { color: var(--text-muted); font-size: 0.85rem; }
.sp-empty-icon { font-size: 1.5rem; }