/* ================================================================
   Vortex AI Unified UI Layer
   Final-pass visual consistency, mobile stability, and common states.
   ================================================================ */

:root {
    --vu-bg: #101014;
    --vu-panel: rgba(20, 20, 24, 0.78);
    --vu-panel-strong: rgba(18, 18, 22, 0.9);
    --vu-border: rgba(255, 255, 255, 0.085);
    --vu-border-strong: rgba(255, 255, 255, 0.13);
    --vu-text: #f0f0f4;
    --vu-text-2: rgba(240, 240, 244, 0.68);
    --vu-text-3: rgba(240, 240, 244, 0.44);
    --vu-accent: #f5a0b8;
    --vu-accent-2: #dcc5a8;
    --vu-accent-soft: rgba(245, 160, 184, 0.105);
    --vu-success: #34d399;
    --vu-danger: #f87171;
    --vu-warn: #fbbf24;
    --vu-radius-xs: 6px;
    --vu-radius-sm: 8px;
    --vu-radius-md: 10px;
    --vu-radius-lg: 12px;
    --vu-radius-xl: 18px;
    --vu-shadow: 0 14px 38px rgba(0, 0, 0, 0.28);
    --vu-shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.22);
    --vu-font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    --vu-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --vu-gradient: linear-gradient(135deg, var(--vu-accent), var(--vu-accent-2));
}

[data-theme="blue"] {
    --vu-accent: #6ec6f8;
    --vu-accent-2: #5ed8c8;
    --vu-accent-soft: rgba(110, 198, 248, 0.105);
}

[data-theme="purple"] {
    --vu-accent: #8f86f4;
    --vu-accent-2: #f08cb0;
    --vu-accent-soft: rgba(143, 134, 244, 0.105);
}

[data-theme="cyan"] {
    --vu-accent: #22c5d6;
    --vu-accent-2: #f5a0b8;
    --vu-accent-soft: rgba(34, 197, 214, 0.1);
}

[data-theme="pink"] {
    --vu-accent: #f08cb0;
    --vu-accent-2: #c89ef0;
    --vu-accent-soft: rgba(240, 140, 176, 0.105);
}

html {
    color-scheme: dark;
}

body {
    background-color: var(--vu-bg);
    color: var(--vu-text);
    font-family: var(--vu-font);
    letter-spacing: 0;
}

body::before {
    opacity: 0.9;
}

::selection {
    background: color-mix(in srgb, var(--vu-accent) 34%, transparent);
    color: #fff;
}

button,
input,
textarea,
select {
    font-family: var(--vu-font);
}

button {
    -webkit-tap-highlight-color: transparent;
}

/* Core surfaces */
.card,
.glass-card,
.dialog-card,
.modal,
.announce-panel,
.pass-dialog-inner,
.login-card,
.auth-wrap,
.welcome-card,
.result-card,
.panel-left,
.input-row,
.model-picker,
.app-copyright,
.admin-copyright {
    border-radius: var(--vu-radius-lg) !important;
    border-color: var(--vu-border) !important;
    background:
        linear-gradient(160deg, rgba(255,255,255,0.07), rgba(255,255,255,0.025) 44%, rgba(255,255,255,0.012)),
        var(--vu-panel) !important;
    box-shadow:
        var(--vu-shadow-soft),
        inset 0 1px 0 rgba(255,255,255,0.10) !important;
}

.card:hover,
.glass-card:hover,
.model-pick-card:hover,
.quick-act:hover,
.download-card:hover {
    border-color: var(--vu-border-strong) !important;
    box-shadow:
        var(--vu-shadow),
        inset 0 1px 0 rgba(255,255,255,0.13) !important;
}

/* Navigation */
.sidebar {
    background:
        linear-gradient(180deg, rgba(24,24,29,0.92), rgba(14,14,18,0.96)) !important;
    border-right-color: var(--vu-border) !important;
}

.side-logo,
.side-logo-text,
.topbar-title,
.page-header h1,
.page-title,
.auth-title,
.welcome-greeting,
.model-picker-header h2,
.app-copyright .copyright-text strong,
.admin-copyright .copyright-text strong {
    letter-spacing: 0 !important;
}

.side-link,
.nav-item,
.chat-item,
.quick-act,
.model-pick-card,
.download-card {
    border-radius: var(--vu-radius-md) !important;
}

.side-link.active,
.nav-item.active,
.chat-item.active,
.tab-btn.active,
.auth-tab.active,
.model-pick-card:hover {
    background: var(--vu-accent-soft) !important;
    color: var(--vu-accent) !important;
}

/* Forms */
.form-i,
.form-input,
.form-ta,
.form-textarea,
.form-select,
.code-editor,
textarea,
input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
select {
    border-radius: var(--vu-radius-md) !important;
    border-color: var(--vu-border) !important;
    background: rgba(255,255,255,0.045) !important;
    color: var(--vu-text) !important;
}

.form-i:focus,
.form-input:focus,
.form-ta:focus,
.form-textarea:focus,
.form-select:focus,
.code-editor:focus,
textarea:focus,
input:focus,
select:focus {
    border-color: color-mix(in srgb, var(--vu-accent) 46%, white 4%) !important;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--vu-accent) 14%, transparent) !important;
    outline: none !important;
}

::placeholder {
    color: var(--vu-text-3) !important;
}

/* Buttons */
.btn,
.dialog-btn,
.blessing-close-btn,
.copy-link-btn,
.copy-btn,
.side-bottom-btn,
.top-agent-btn,
.top-user-btn,
.upload-btn,
.send-btn,
.btn-new-chat,
.announce-btn-text,
.announce-close,
.share-mode-btn,
.theme-option-card {
    border-radius: var(--vu-radius-md) !important;
    transition: transform 0.16s ease, background 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease !important;
}

.btn-primary,
.btn-p,
.btn-primary,
.dialog-btn-confirm,
.send-btn,
.btn-new-chat,
.welcome-btn {
    background: var(--vu-gradient) !important;
    color: #17171b !important;
    box-shadow:
        0 8px 20px rgba(0,0,0,0.22),
        inset 0 1px 0 rgba(255,255,255,0.22) !important;
}

.btn-o,
.btn-outline,
.btn-ghost,
.dialog-btn-cancel {
    background: rgba(255,255,255,0.035) !important;
    border: 1px solid var(--vu-border) !important;
    color: var(--vu-text-2) !important;
}

.btn:hover,
.dialog-btn:hover,
.copy-link-btn:hover,
.copy-btn:hover,
.side-bottom-btn:hover,
.top-agent-btn:hover,
.top-user-btn:hover,
.upload-btn:hover,
.send-btn:hover,
.btn-new-chat:hover {
    transform: translateY(-1px);
}

button:disabled,
.btn:disabled {
    opacity: 0.46 !important;
    cursor: not-allowed !important;
    transform: none !important;
}

/* Tables and empty states */
table {
    border-collapse: collapse;
}

th {
    color: var(--vu-text-2) !important;
    font-weight: 650 !important;
}

td {
    color: var(--vu-text-2);
}

.empty,
.chat-empty,
.preview-empty {
    color: var(--vu-text-3) !important;
    min-height: 86px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    line-height: 1.6;
}

.badge,
.copyright-pill,
.security-status,
.pick-badge,
.credit-badge {
    border-radius: 999px !important;
}

.vu-mobile-menu,
.vu-side-mask {
    display: none;
}

/* Footer copyright: one unified understated status bar */
.app-copyright,
.admin-copyright {
    align-self: stretch !important;
    width: auto !important;
    max-width: none !important;
    margin: 0 !important;
    padding: 9px 22px 10px !important;
    min-height: 42px;
    justify-content: flex-start !important;
    gap: 10px !important;
    border-radius: 0 !important;
    border-left: 0 !important;
    border-right: 0 !important;
    border-bottom: 0 !important;
    color: var(--vu-text-3) !important;
}

.app-copyright .copyright-logo,
.admin-copyright .copyright-logo {
    width: 22px !important;
    height: 22px !important;
    border-radius: var(--vu-radius-xs) !important;
}

.app-copyright .copyright-text,
.admin-copyright .copyright-text {
    flex-direction: row !important;
    align-items: baseline !important;
    gap: 8px !important;
    min-width: 0;
    white-space: nowrap;
}

.app-copyright .copyright-text span,
.admin-copyright .copyright-text span {
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Mobile stability and ergonomics */
@media (max-width: 768px), (hover: none) and (pointer: coarse) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
    }

    .ambient-orbs,
    .liquid-deco,
    .bg-orb,
    .cursor-glow,
    .welcome-backdrop {
        display: none !important;
    }

    .sidebar,
    .top-title,
    .model-bar,
    .app-copyright,
    .admin-copyright,
    .card,
    .glass-card,
    .ai-content,
    .ai-answer,
    .think-block,
    .code-block-wrap,
    .writing-block-wrap,
    .welcome-screen,
    .dialog-overlay,
    .pass-dialog-overlay {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    .model-picker,
    .input-row,
    .dialog-card,
    .modal,
    .announce-panel,
    .pass-dialog-inner,
    .panel-left,
    .download-card {
        backdrop-filter: blur(5px) saturate(105%) !important;
        -webkit-backdrop-filter: blur(5px) saturate(105%) !important;
    }

    .main,
    .main-area,
    .app {
        min-width: 0 !important;
    }

    .vu-mobile-menu {
        position: fixed;
        top: 12px;
        left: 12px;
        z-index: 1600;
        width: 40px;
        height: 40px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--vu-text);
        background:
            linear-gradient(145deg, rgba(255,255,255,0.075), rgba(255,255,255,0.025)),
            rgba(18,18,22,0.88);
        border: 1px solid var(--vu-border);
        border-radius: var(--vu-radius-md);
        box-shadow: 0 8px 20px rgba(0,0,0,0.28);
    }

    .vu-side-mask {
        position: fixed;
        inset: 0;
        z-index: 1490;
        display: block;
        background: rgba(0,0,0,0.52);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.18s ease, visibility 0.18s ease;
    }

    .vu-side-mask.show {
        opacity: 1;
        visibility: visible;
    }

    body.sidebar-open {
        overflow: hidden;
    }

    body.sidebar-open .sidebar {
        z-index: 1500;
    }

    .page-header,
    .card-header,
    .topbar,
    .model-bar,
    .modal-btns,
    .dialog-actions {
        gap: 8px !important;
    }

    .page-header,
    .card-header {
        align-items: stretch !important;
    }

    .page-header input,
    .page-header .form-input,
    .page-header button {
        width: 100% !important;
        margin-left: 0 !important;
    }

    table {
        min-width: 720px;
    }

    .card,
    .glass-card {
        overflow-x: auto !important;
    }

    .app-copyright,
    .admin-copyright {
        padding: 9px 14px 10px !important;
        font-size: 11px !important;
    }

    .app-copyright .copyright-text,
    .admin-copyright .copyright-text {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}