/* Vaani AI Banking Intelligence — Design System */

/* ── Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Syne:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-void: #050810;
    --bg-deep: #080d1a;
    --bg-panel: #0d1526;
    --bg-card: #111e35;
    --bg-lift: #162338;
    --bg-hover: #1c2c45;

    --accent-gold: #d4a853;
    --accent-gold-dim: #9a7a3a;
    --accent-gold-glow: rgba(212,168,83,0.15);

    --accent-teal: #2dd4bf;
    --accent-teal-glow: rgba(45,212,191,0.12);

    --accent-red: #ef4444;
    --accent-green: #22c55e;

    --text-primary: #f0ece3;
    --text-secondary: #8b98b4;
    --text-muted: #4a5578;

    --font-display: 'Instrument Serif', Georgia, serif;
    --font-ui: 'Syne', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --header-height: 72px;
    --sidebar-width: 280px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-void);
    color: var(--text-primary);
    font-family: var(--font-ui);
    overflow: hidden;
    height: 100vh;
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.08) transparent;
}

/* ── Background Effects ── */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 1;
}

.orb {
    position: fixed;
    width: 40vw;
    height: 40vw;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
}

.orb-1 {
    top: -10%;
    right: -10%;
    background: var(--accent-gold-glow);
}

.orb-2 {
    bottom: -10%;
    left: -10%;
    background: var(--accent-teal-glow);
}

/* ── App Layout ── */
.app {
    display: grid;
    grid-template-areas:
        "header header"
        "sidebar main";
    grid-template-columns: var(--sidebar-width) 1fr;
    grid-template-rows: var(--header-height) 1fr;
    height: 100vh;
    position: relative;
    z-index: 10;
}

/* ── Header ── */
header {
    grid-area: header;
    background: rgba(5, 8, 16, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-mark {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dim));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-void);
    font-size: 24px;
    font-weight: bold;
}

.brand-name {
    display: block;
    font-family: var(--font-display);
    font-style: italic;
    font-size: 28px;
    line-height: 1;
}

.brand-tag {
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--accent-gold);
    font-weight: 700;
}

.sidebar-toggle {
    display: none;
    background: var(--bg-lift);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-primary);
    font-size: 20px;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.sidebar-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--accent-gold);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

#language-select {
    background: var(--bg-lift);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 8px;
    font-family: var(--font-ui);
    font-size: 13px;
    cursor: pointer;
    outline: none;
    transition: var(--transition);
}

#language-select:focus {
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 2px var(--accent-gold-glow);
}

#language-select option {
    background: var(--bg-deep);
    color: var(--text-primary);
}

.status-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.03);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: var(--transition);
}

.status-dot.connected {
    background: var(--accent-green);
    box-shadow: 0 0 10px var(--accent-green);
    animation: pulse-dot 2s infinite;
}

.status-dot.error {
    background: var(--accent-red);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}

@keyframes pulse-dot {
    0%   { transform: scale(1);   opacity: 1;   }
    50%  { transform: scale(1.3); opacity: 0.7;  }
    100% { transform: scale(1);   opacity: 1;   }
}

/* ── Sidebar ── */
.sidebar {
    grid-area: sidebar;
    background: var(--bg-deep);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    padding: 24px;
    overflow-y: auto;
    transition: var(--transition);
}

.sidebar-header {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.sidebar-empty {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 12px;
}

.sidebar-empty.hidden {
    display: none;
}

#history-list {
    list-style: none;
}

.history-item {
    background: var(--bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.03);
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 13px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    animation: fade-up 0.3s ease forwards;
}

.history-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-gold-dim);
    color: var(--text-primary);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* ── Main Panel ── */
.main-panel {
    grid-area: main;
    padding: 40px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
    position: relative;
}

.query-section {
    max-width: 800px;
    width: 100%;
    animation: fade-up 0.6s ease forwards;
}

.query-title {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 48px;
    margin-bottom: 8px;
    line-height: 1.1;
}

.cursor {
    color: var(--accent-gold);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.query-hint {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 15px;
}

.query-container {
    background: var(--bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.dropzone {
    background: rgba(255, 255, 255, 0.02);
    border: 2px dashed rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 32px;
    text-align: center;
    margin-top: 24px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.dropzone:hover, .dropzone.dragover {
    background: rgba(212, 168, 83, 0.05);
    border-color: var(--accent-gold);
    box-shadow: 0 0 20px var(--accent-gold-glow);
}

.dropzone-content {
    pointer-events: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.dropzone-icon {
    font-size: 32px;
    color: var(--text-muted);
    transition: var(--transition);
}

.dropzone:hover .dropzone-icon, .dropzone.dragover .dropzone-icon {
    color: var(--accent-gold);
    transform: translateY(-4px);
}

.dropzone-text {
    color: var(--text-secondary);
    font-size: 14px;
}

.dropzone-btn {
    background: transparent;
    color: var(--accent-gold);
    border: 1px solid var(--accent-gold);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    margin-top: 8px;
    pointer-events: auto;
    transition: var(--transition);
}

.dropzone-btn:hover {
    background: var(--accent-gold);
    color: var(--bg-void);
}

.input-row {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

textarea#query-input {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 20px;
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 16px;
    resize: vertical;
    min-height: 100px;
    max-height: 240px;
    outline: none;
    transition: var(--transition);
    line-height: 1.5;
}

textarea#query-input:focus {
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 4px var(--accent-gold-glow);
}

textarea#query-input::placeholder {
    color: var(--text-muted);
}

/* ── Mic Button ── */
#mic-btn {
    width: 64px;
    height: 64px;
    min-width: 64px;
    border-radius: 50%;
    background: var(--bg-lift);
    border: 2px solid rgba(255, 255, 255, 0.1);
    color: var(--accent-gold);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: var(--transition);
    position: relative;
}

#mic-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-gold);
    box-shadow: 0 0 20px var(--accent-gold-glow);
}

#mic-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

#mic-btn:disabled:hover {
    background: var(--bg-lift);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: none;
}

#mic-btn.recording {
    background: var(--accent-red);
    border-color: var(--accent-red);
    color: white;
    animation: pulse-ring 1.5s ease infinite;
}

#mic-btn.recording .mic-icon {
    display: none;
}

#mic-btn.processing {
    background: var(--bg-lift);
    border-color: var(--accent-teal);
    pointer-events: none;
}

#mic-btn.processing::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--accent-teal);
    animation: spin 1s linear infinite;
}

@keyframes pulse-ring {
    0%   { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5); }
    70%  { box-shadow: 0 0 0 15px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.waveform {
    display: none;
    align-items: center;
    gap: 3px;
    height: 20px;
}

#mic-btn.recording .waveform {
    display: flex;
}

.bar {
    width: 3px;
    height: 4px;
    background: white;
    border-radius: 2px;
    animation: wave 1s ease-in-out infinite;
}

.bar:nth-child(2) { animation-delay: 0.1s; }
.bar:nth-child(3) { animation-delay: 0.2s; }
.bar:nth-child(4) { animation-delay: 0.3s; }
.bar:nth-child(5) { animation-delay: 0.4s; }

@keyframes wave {
    0%, 100% { height: 4px; }
    50% { height: 20px; }
}

/* ── Action Row ── */
.action-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#submit-btn {
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dim));
    color: var(--bg-void);
    border: none;
    padding: 14px 36px;
    border-radius: 12px;
    font-family: var(--font-ui);
    font-weight: 700;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

#submit-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(212,168,83,0.35);
}

#submit-btn:active {
    transform: scale(0.98);
    box-shadow: 0 4px 12px rgba(212,168,83,0.2);
}

#submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.kbd-hint {
    font-size: 12px;
    color: var(--text-muted);
}

kbd {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    padding: 2px 6px;
    margin: 0 2px;
    font-family: var(--font-mono);
    font-size: 11px;
}

/* ── Results Section ── */
.results-section {
    max-width: 1000px;
    width: 100%;
    animation: fade-up 0.5s ease forwards;
}

@keyframes fade-up {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.sql-toggle-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    background: var(--bg-panel);
    padding: 6px 14px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: var(--transition);
    user-select: none;
}

.sql-toggle-btn:hover {
    border-color: var(--accent-gold);
    background: var(--bg-card);
}

.sql-badge {
    font-size: 10px;
    font-weight: 800;
    background: var(--accent-gold);
    color: var(--bg-void);
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 1px;
}

.results-meta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.row-count {
    font-size: 13px;
    color: var(--text-secondary);
    background: rgba(255,255,255,0.03);
    padding: 6px 14px;
    border-radius: 8px;
}

.icon-btn {
    background: var(--bg-lift);
    border: 1px solid rgba(255,255,255,0.05);
    color: var(--text-primary);
    width: 38px;
    height: 38px;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-gold);
    box-shadow: 0 4px 12px rgba(212,168,83,0.15);
}

/* ── SQL Display ── */
.sql-container {
    background: #020509;
    border: 1px solid var(--accent-gold-dim);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 32px;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--accent-teal);
    overflow-x: auto;
    line-height: 1.6;
    animation: fade-up 0.3s ease forwards;
}

.sql-container .kw {
    color: var(--accent-gold);
    font-weight: 500;
}

.sql-container .str {
    color: #a5d6ff;
}

.sql-container .num {
    color: #ffa657;
}

.sql-container .fn {
    color: #d2a8ff;
}

/* ── Visualization ── */
.visualization-area {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.chart-container {
    background: var(--bg-panel);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 20px;
    padding: 32px;
    min-height: 280px;
    animation: fade-up 0.4s ease forwards;
}

/* ── Big Number Card ── */
.bignumber-container {
    background: var(--bg-panel);
    border: 1px solid var(--accent-gold-dim);
    border-radius: 20px;
    padding: 48px;
    text-align: center;
    animation: fade-up 0.4s ease forwards;
}

.big-number-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
    font-weight: 600;
}

.big-number-value {
    font-family: var(--font-display);
    font-size: 64px;
    color: var(--accent-gold);
    line-height: 1;
    text-shadow: 0 0 40px var(--accent-gold-glow);
}

/* ── Table ── */
.table-container {
    background: var(--bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    overflow-x: auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    animation: fade-up 0.4s ease forwards;
}

.table-container .empty-state {
    padding: 48px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: sticky;
    top: 0;
    z-index: 5;
}

th {
    text-align: left;
    padding: 16px 20px;
    color: var(--accent-gold);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 1px;
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
}

th:hover {
    background: rgba(255, 255, 255, 0.04);
}

th .sort-arrow {
    color: var(--text-muted);
    font-size: 10px;
    margin-left: 6px;
    opacity: 0.5;
}

th.sorted .sort-arrow {
    color: var(--accent-gold);
    opacity: 1;
}

td {
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    font-size: 13px;
}

tr:last-child td {
    border-bottom: none;
}

tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.01);
}

tr:hover td {
    background: rgba(212, 168, 83, 0.05);
    color: var(--text-primary);
}

/* Table row animation — starts invisible, animated in by JS */
tbody tr {
    opacity: 0;
    animation: fade-up 0.3s ease forwards;
}

/* ── Loading Overlay ── */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 8, 16, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.spinner-container {
    text-align: center;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(212, 168, 83, 0.1);
    border-top-color: var(--accent-gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    font-size: 14px;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

/* ── Toast ── */
.toast {
    position: fixed;
    bottom: 40px;
    right: 40px;
    background: var(--bg-card);
    border: 1px solid rgba(255,255,255,0.05);
    border-left: 4px solid var(--accent-gold);
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    transform: translateX(calc(100% + 60px));
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2000;
    font-size: 14px;
    max-width: 400px;
}

.toast.show {
    transform: translateX(0);
}

.toast.error {
    border-left-color: var(--accent-red);
}

.toast.success {
    border-left-color: var(--accent-teal);
}

/* ── Responsive: Tablet (≤1024px) ── */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 220px;
    }

    header {
        padding: 0 20px;
    }

    .main-panel {
        padding: 28px;
    }

    .query-title {
        font-size: 36px;
    }

    .big-number-value {
        font-size: 48px;
    }
}

/* ── Responsive: Mobile (≤768px) ── */
@media (max-width: 768px) {
    .app {
        grid-template-areas:
            "header"
            "main";
        grid-template-columns: 1fr;
        grid-template-rows: var(--header-height) 1fr;
    }

    .sidebar {
        position: fixed;
        left: -300px;
        top: var(--header-height);
        bottom: 0;
        width: 280px;
        z-index: 500;
        transition: left 0.3s ease;
        box-shadow: 4px 0 24px rgba(0,0,0,0.5);
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    header {
        padding: 0 16px;
        gap: 8px;
    }

    .brand-name {
        font-size: 22px;
    }

    .brand-tag {
        font-size: 8px;
    }

    .header-right {
        gap: 12px;
    }

    #language-select {
        padding: 6px 10px;
        font-size: 11px;
    }

    .status-pill span {
        display: none;
    }

    .main-panel {
        padding: 20px 16px;
        gap: 24px;
    }

    .query-title {
        font-size: 28px;
    }

    .query-hint {
        font-size: 13px;
        margin-bottom: 20px;
    }

    .query-container {
        padding: 16px;
        border-radius: 16px;
    }

    .input-row {
        gap: 10px;
    }

    textarea#query-input {
        padding: 14px;
        font-size: 14px;
        min-height: 80px;
    }

    #mic-btn {
        width: 52px;
        height: 52px;
        min-width: 52px;
        font-size: 20px;
    }

    #submit-btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .kbd-hint {
        display: none;
    }

    .results-header {
        flex-wrap: wrap;
        gap: 12px;
    }

    .chart-container {
        padding: 16px;
    }

    td, th {
        padding: 10px 12px;
    }

    .big-number-value {
        font-size: 40px;
    }

    .bignumber-container {
        padding: 32px 16px;
    }

    .toast {
        left: 16px;
        right: 16px;
        bottom: 20px;
    }
}

/* ── Responsive: Small Mobile (≤480px) ── */
@media (max-width: 480px) {
    .query-title {
        font-size: 24px;
    }

    .logo-mark {
        width: 32px;
        height: 32px;
        font-size: 18px;
    }

    .big-number-value {
        font-size: 32px;
    }

    .action-row {
        flex-direction: column;
        gap: 8px;
    }

    #submit-btn {
        width: 100%;
    }
}