:root {
    --bg-color: #070a12;
    --card-bg: rgba(15, 23, 42, 0.7);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-hover-border: rgba(139, 92, 246, 0.3);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-primary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    --accent-glow: rgba(139, 92, 246, 0.25);
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.2);
    --warning: #f59e0b;
    --error: #ef4444;
    --font-display: 'Outfit', sans-serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 15% 15%, rgba(139, 92, 246, 0.12) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(99, 102, 241, 0.1) 0%, transparent 45%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
}

header {
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--card-border);
    background: rgba(7, 10, 18, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 0 15px var(--accent-glow);
}

.header-logo h1 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, #ffffff 40%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.3px;
}

.header-stats {
    display: flex;
    gap: 10px;
    align-items: center;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    font-weight: 500;
    background: rgba(255, 255, 255, 0.04);
    padding: 6px 14px;
    border-radius: 99px;
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    transition: var(--transition);
}

.user-profile-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    font-weight: 500;
    background: rgba(139, 92, 246, 0.12);
    padding: 6px 14px;
    border-radius: 99px;
    border: 1px solid rgba(139, 92, 246, 0.25);
    color: var(--text-primary);
}

.logout-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 12.5px;
    font-family: var(--font-sans);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 10px;
    border-radius: 8px;
    transition: var(--transition);
}

.logout-btn:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.08);
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.status-dot.error {
    background-color: var(--error);
    box-shadow: 0 0 8px var(--error);
}

main {
    flex: 1;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Tabs Nav */
.tabs-nav {
    display: flex;
    background: rgba(255, 255, 255, 0.03);
    padding: 5px;
    border-radius: 14px;
    border: 1px solid var(--card-border);
    width: fit-content;
    margin: 0 auto;
    gap: 4px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 500;
    padding: 9px 20px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

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

.tab-btn.active {
    background: var(--accent-gradient);
    color: #ffffff;
    font-weight: 600;
    box-shadow: 0 4px 14px var(--accent-glow);
}

/* Container Panels */
.tab-panel {
    display: none;
    width: 100%;
    animation: fadeIn 0.3s ease-out forwards;
}

.tab-panel.active {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.card-title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

/* Forms Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

textarea,
input[type="text"],
input[type="password"] {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    padding: 14px 16px;
    font-family: var(--font-sans);
    font-size: 15px;
    outline: none;
    transition: var(--transition);
}

textarea:focus,
input[type="text"]:focus,
input[type="password"]:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.18);
    background: rgba(255, 255, 255, 0.05);
}

textarea {
    resize: vertical;
    min-height: 140px;
    line-height: 1.5;
}

/* Password field with eye toggle */
.password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-wrapper input[type="password"],
.password-wrapper input[type="text"] {
    flex: 1;
    padding-right: 44px;
}

.eye-btn {
    position: absolute;
    right: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    border-radius: 6px;
    transition: var(--transition);
    user-select: none;
    -webkit-user-select: none;
}

.eye-btn:hover {
    color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.1);
}

/* Password match feedback */
.match-ok {
    color: var(--success);
}

.match-err {
    color: var(--error);
}

.shortcut-tip {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 4px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--accent-gradient);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    padding: 12px 24px;
    font-family: var(--font-display);
    font-size: 14.5px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 14px rgba(139, 92, 246, 0.25);
    min-height: 44px;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.btn:active {
    transform: translateY(0);
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    color: var(--text-secondary);
    box-shadow: none;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    box-shadow: none;
}

/* Chat Layout */
.chat-pane {
    height: 460px;
    overflow-y: auto;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 20px;
    background: rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-behavior: smooth;
}

.chat-placeholder {
    margin: auto;
    text-align: center;
    max-width: 320px;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.chat-placeholder-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.chat-bubble {
    max-width: 85%;
    padding: 14px 18px;
    border-radius: 14px;
    font-size: 14.5px;
    line-height: 1.55;
    animation: slideUp 0.25s ease-out forwards;
    word-break: break-word;
}

.chat-bubble.user {
    align-self: flex-end;
    background: var(--accent-gradient);
    color: #ffffff;
    border-bottom-right-radius: 4px;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.chat-bubble.bot {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    border-bottom-left-radius: 4px;
}

/* Sources Card */
.sources-container {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.source-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.source-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    font-size: 12.5px;
    cursor: pointer;
    transition: var(--transition);
}

.source-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
}

.source-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
    font-weight: 500;
    color: var(--accent-primary);
}

.source-body {
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.source-card.expanded .source-body {
    display: block;
    overflow: visible;
    -webkit-line-clamp: initial;
    line-clamp: initial;
}

/* Suggestion Badges */
.suggestions-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: rgba(245, 158, 11, 0.04);
    border: 1px solid rgba(245, 158, 11, 0.15);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    animation: fadeIn 0.3s ease-out;
}

.suggestions-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--warning);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.suggestion-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.suggestion-chip {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    color: #fbbf24;
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 12.5px;
    cursor: pointer;
    transition: var(--transition);
}

.suggestion-chip:hover {
    background: rgba(245, 158, 11, 0.2);
    border-color: rgba(245, 158, 11, 0.4);
}

/* Clean Vault Success Notification Card */
.vault-status-card {
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.vault-status-header {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--success);
    font-weight: 600;
    font-size: 15px;
}

.vault-summary-text {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.5;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    padding: 12px 14px;
    border-radius: 10px;
    border-left: 3px solid var(--success);
}

/* Loading Indicator */
.loader-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13.5px;
    color: var(--text-secondary);
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Auth Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.25s ease-out forwards;
    padding: 16px;
}

.modal-content {
    width: 100%;
    max-width: 400px;
    padding: 28px !important;
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.modal-close-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    border-radius: 6px;
}

.modal-close-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.08);
}

/* Auth Divider for Google Sign-In */
.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 16px 0 14px 0;
    color: var(--text-muted);
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--card-border);
}

.auth-divider span {
    padding: 0 12px;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

footer {
    padding: 18px 20px;
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid var(--card-border);
    margin-top: auto;
}

/* Responsive Mobile Styles */
@media (max-width: 768px) {
    header {
        padding: 14px 16px;
    }

    .header-logo h1 {
        font-size: 18px;
    }

    main {
        padding: 16px 12px;
        gap: 16px;
    }

    .tabs-nav {
        width: 100%;
        justify-content: center;
    }

    .tab-btn {
        flex: 1;
        justify-content: center;
        padding: 9px 12px;
        font-size: 13.5px;
    }

    .glass-card {
        padding: 16px;
        gap: 14px;
    }

    .chat-pane {
        height: 400px;
        padding: 14px;
    }

    .chat-bubble {
        max-width: 90%;
        font-size: 14px;
        padding: 12px 14px;
    }

    textarea,
    input[type="text"],
    input[type="password"] {
        font-size: 16px;
        /* Prevents auto-zoom on iOS safari */
        padding: 12px 14px;
    }
}