/* ============================================
   TradePeak - Main Stylesheet
   Color Scheme: Dark Navy + Teal Accents
   ============================================ */

:root {
    /* Colors */
    --color-bg:          #0b1120;
    --color-bg-alt:      #111827;
    --color-surface:     #1e293b;
    --color-surface-alt: #273548;
    --color-border:      #334155;
    --color-primary:     #0d9488;
    --color-primary-hover: #14b8a6;
    --color-primary-glow: rgba(13, 148, 136, 0.25);
    --color-accent:      #06b6d4;
    --color-text:        #e2e8f0;
    --color-text-muted:  #94a3b8;
    --color-text-dim:    #64748b;
    --color-white:       #ffffff;
    --color-danger:      #ef4444;
    --color-success:     #22c55e;
    --color-warning:     #f59e0b;

    /* Typography */
    --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Space Grotesk', 'Inter', sans-serif;

    /* Sizing */
    --header-height: 64px;
    --sidebar-width: 280px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
}

/* ============================================
   Reset & Base
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s;
}
a:hover {
    color: var(--color-primary-hover);
}

img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   Header
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(11, 17, 32, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Logo */
.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-white);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    white-space: nowrap;
}

.logo-img {
    height: 38px;
    width: auto;
    border-radius: var(--radius-sm);
}

.logo-text {
    letter-spacing: 0.5px;
}

/* Desktop Nav */
.desktop-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
    white-space: nowrap;
}
.nav-link:hover {
    color: var(--color-white);
    background: var(--color-surface);
}
.nav-link.active {
    color: var(--color-primary);
    background: rgba(13, 148, 136, 0.12);
}
.nav-link i {
    font-size: 0.85rem;
}

/* Header Right */
.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* User Avatar */
.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}
.user-avatar:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s;
    transform-origin: center;
}

.hamburger.is-active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.hamburger.is-active .hamburger-line:nth-child(2) {
    opacity: 0;
}
.hamburger.is-active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Mobile Sidebar
   ============================================ */
.mobile-sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--color-bg-alt);
    border-right: 1px solid var(--color-border);
    z-index: 1100;
    transition: left 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.mobile-sidebar.is-open {
    left: 0;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-logo {
    height: 36px;
    width: auto;
    border-radius: var(--radius-sm);
}

.sidebar-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--color-white);
}

.sidebar-nav {
    flex: 1;
    padding: 12px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
    margin-bottom: 2px;
}
.sidebar-link:hover {
    color: var(--color-white);
    background: var(--color-surface);
}
.sidebar-link.active {
    color: var(--color-primary);
    background: rgba(13, 148, 136, 0.12);
}
.sidebar-link i {
    width: 20px;
    text-align: center;
    font-size: 0.9rem;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-dim);
    text-align: center;
}

/* Nav Overlay */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}
.nav-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
}

/* ============================================
   Landing Page - Hero
   ============================================ */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--header-height));
    padding: 60px 20px;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 20%, rgba(13, 148, 136, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-logo {
    width: min(80%, 400px);
    margin-bottom: 32px;
    border-radius: var(--radius-lg);
    filter: drop-shadow(0 0 30px rgba(13, 148, 136, 0.3));
    animation: fadeInUp 0.8s ease;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero h1 .text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--color-text-muted);
    margin-bottom: 40px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.3s both;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: all 0.25s;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #0f766e);
    color: var(--color-white);
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-hover), var(--color-primary));
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--color-primary-glow);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* ============================================
   Feature Cards (Landing Page)
   ============================================ */
.features-section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--color-white);
    text-align: center;
    margin-bottom: 48px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s;
}
.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(13, 148, 136, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--color-primary);
    font-size: 1.2rem;
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ============================================
   Page Container (Sub-pages)
   ============================================ */
.page-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px 20px;
}

.page-header {
    margin-bottom: 32px;
}

.page-title {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 8px;
}

.page-description {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* ============================================
   Embed Frame (Trading App)
   ============================================ */
.embed-wrapper {
    position: relative;
    width: 100%;
    height: calc(100vh - var(--header-height) - 120px);
    min-height: 500px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.embed-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.embed-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
    color: var(--color-text-muted);
    z-index: 1;
    background: var(--color-surface);
    transition: opacity 0.3s;
}
.embed-loading.is-hidden {
    opacity: 0;
    pointer-events: none;
}

/* ============================================
   Database / Table Styles
   ============================================ */
.db-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
    align-items: center;
}

.db-select {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-family: var(--font-body);
    min-width: 200px;
    cursor: pointer;
    transition: border-color 0.2s;
}
.db-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.db-status {
    color: var(--color-text-dim);
    font-size: 0.85rem;
    margin-left: auto;
}

.db-status .status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
    background: var(--color-text-dim);
}
.db-status .status-dot.connected { background: var(--color-success); }
.db-status .status-dot.error     { background: var(--color-danger); }

/* Global Search */
.db-search-global {
    position: relative;
    margin-bottom: 16px;
}
.db-search-global i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-dim);
    font-size: 0.85rem;
    pointer-events: none;
}
.db-search-global input {
    width: 100%;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 10px 100px 10px 38px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-family: var(--font-body);
    transition: border-color 0.2s;
}
.db-search-global input:focus {
    outline: none;
    border-color: var(--color-primary);
}
.db-search-global .search-count {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-dim);
    font-size: 0.8rem;
    pointer-events: none;
}

/* Sortable Headers */
.sortable-th {
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}
.sortable-th:hover {
    color: var(--color-primary);
}
.sortable-th .sort-idle {
    opacity: 0.3;
    font-size: 0.7rem;
    margin-left: 4px;
}
.sortable-th .sort-active {
    color: var(--color-primary);
    font-size: 0.7rem;
    margin-left: 4px;
}

/* Column Filter Row */
.filter-row th {
    padding: 6px 8px !important;
    background: var(--color-surface) !important;
    border-bottom: 2px solid var(--color-border) !important;
    position: sticky;
    top: 40px;
    z-index: 1;
}
.col-filter {
    width: 100%;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-family: var(--font-body);
    transition: border-color 0.2s;
}
.col-filter:focus {
    outline: none;
    border-color: var(--color-primary);
}
.col-filter::placeholder {
    color: var(--color-text-dim);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
    padding: 12px 0;
}
.pagination-info {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}
.pagination-buttons {
    display: flex;
    align-items: center;
    gap: 4px;
}
.pagination-btn {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all 0.2s;
    min-width: 36px;
    text-align: center;
}
.pagination-btn:hover:not([disabled]):not(.active) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.pagination-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
}
.pagination-btn[disabled] {
    opacity: 0.3;
    cursor: not-allowed;
}
.pagination-ellipsis {
    color: var(--color-text-dim);
    padding: 0 4px;
    font-size: 0.85rem;
}

.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    -webkit-overflow-scrolling: touch;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table th {
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    font-weight: 600;
    text-align: left;
    padding: 12px 16px;
    white-space: nowrap;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1;
}

.data-table td {
    padding: 10px 16px;
    border-bottom: 1px solid rgba(51, 65, 85, 0.5);
    color: var(--color-text);
    white-space: nowrap;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.data-table tbody tr:hover {
    background: rgba(13, 148, 136, 0.06);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Info/Alert boxes */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.alert-info {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--color-accent);
}
.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--color-warning);
}
.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--color-danger);
}

/* Spinner */
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: 40px 20px;
    margin-top: 60px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    height: 32px;
    border-radius: var(--radius-sm);
}

.footer-brand p {
    color: var(--color-text-dim);
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}
.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}
.footer-links a:hover {
    color: var(--color-primary);
}

.footer-copy {
    color: var(--color-text-dim);
    font-size: 0.8rem;
    width: 100%;
    text-align: center;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

/* ============================================
   Disclaimer Banner
   ============================================ */
.disclaimer-banner {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(239, 68, 68, 0.08));
    border-bottom: 1px solid rgba(245, 158, 11, 0.25);
    padding: 12px 20px;
}
.disclaimer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}
.disclaimer-inner > i {
    color: var(--color-warning);
    font-size: 1.1rem;
    flex-shrink: 0;
}
.disclaimer-text {
    flex: 1;
}
.disclaimer-text strong {
    color: var(--color-warning);
}
.disclaimer-link {
    flex-shrink: 0;
    color: var(--color-text-dim);
    font-size: 0.78rem;
    text-decoration: underline;
    text-underline-offset: 2px;
    white-space: nowrap;
}
.disclaimer-link:hover {
    color: var(--color-primary);
}
@media (max-width: 600px) {
    .disclaimer-inner {
        flex-wrap: wrap;
        font-size: 0.76rem;
    }
    .disclaimer-link {
        width: 100%;
        text-align: right;
    }
}

/* ============================================
   Imprint Page
   ============================================ */
.imprint-content {
    max-width: 800px;
}
.imprint-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px;
    margin-bottom: 20px;
}
.imprint-section h2 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--color-white);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border);
}
.imprint-section p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 12px;
}
.imprint-section p:last-child {
    margin-bottom: 0;
}
.imprint-section strong {
    color: var(--color-text);
}

/* ============================================
   Daily Signals Page
   ============================================ */

/* Date Navigation */
.signals-date-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
    padding: 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.signals-arrow {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: #6c5ce7;
    border: none;
    color: var(--color-white);
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
}
.signals-arrow:hover {
    background: #7d6ff0;
    transform: scale(1.08);
}
.signals-arrow:active {
    transform: scale(0.96);
}

.signals-date-display {
    text-align: center;
    min-width: 160px;
}
.signals-date-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}
.signals-date-value {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-white);
}

/* Buy / Sell Tabs */
.signals-tabs {
    display: flex;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--color-border);
    position: relative;
}
.signals-tab {
    flex: 1;
    padding: 14px 0;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    transition: color 0.3s ease;
}
.signals-tab:hover {
    color: var(--color-text);
}
.signals-tab.active {
    color: #6c5ce7;
}
.signals-tab::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: #6c5ce7;
    transform: scaleX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.signals-tab.active::after {
    transform: scaleX(1);
}

/* Signals list container */
.signals-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 200px;
}

.signals-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 60px 20px;
    color: var(--color-text-muted);
}

.signals-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-dim);
    font-size: 0.95rem;
    animation: sigFadeIn 0.4s ease;
}

/* Signal card */
.signal-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all 0.25s ease;
    animation: sigSlideIn 0.4s ease both;
}
.signal-card:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-alt);
    transform: translateX(4px);
}

.signal-card-left {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.signal-symbol {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-white);
    text-decoration: none;
}
a.signal-symbol:hover {
    text-decoration: underline;
    color: var(--color-accent);
}
.signal-company {
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.signal-card-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Sparkline center area */
.signal-card-center {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    padding: 0 16px;
}
.signal-sparkline {
    width: 200px;
    height: 56px;
    opacity: 0;
    transition: opacity 0.4s ease;
    position: relative;
}
.signal-sparkline:has(svg) {
    opacity: 1;
}
.sparkline-svg {
    width: 100%;
    height: 100%;
    display: block;
}
.sparkline-svg circle {
    cursor: pointer;
    transition: r 0.15s ease;
}
.sparkline-tooltip {
    position: fixed;
    z-index: 10000;
    background: #141422;
    border: 1px solid #3a3a5c;
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--color-text-muted, #ccc);
    white-space: nowrap;
    pointer-events: none;
    box-shadow: 0 6px 24px rgba(0,0,0,0.7);
    display: none;
}
.sparkline-tooltip .tt-label {
    color: var(--color-text-dim, #888);
}
.sparkline-tooltip .tt-value {
    color: var(--color-white, #fff);
    font-weight: 600;
}
.signal-price {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

/* Prediction bubble */
.signal-bubble {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.72rem;
    color: var(--color-white);
    flex-shrink: 0;
    transition: transform 0.3s ease;
}
.signal-card:hover .signal-bubble {
    transform: scale(1.12);
}
.signal-bubble.buy {
    background: var(--color-success);
    box-shadow: 0 0 12px rgba(34, 197, 94, 0.35);
}
.signal-bubble.sell {
    background: var(--color-danger);
    box-shadow: 0 0 12px rgba(239, 68, 68, 0.35);
}

/* Stagger animation for cards */
.signal-card:nth-child(1)  { animation-delay: 0.00s; }
.signal-card:nth-child(2)  { animation-delay: 0.04s; }
.signal-card:nth-child(3)  { animation-delay: 0.08s; }
.signal-card:nth-child(4)  { animation-delay: 0.12s; }
.signal-card:nth-child(5)  { animation-delay: 0.16s; }
.signal-card:nth-child(6)  { animation-delay: 0.20s; }
.signal-card:nth-child(7)  { animation-delay: 0.24s; }
.signal-card:nth-child(8)  { animation-delay: 0.28s; }
.signal-card:nth-child(9)  { animation-delay: 0.32s; }
.signal-card:nth-child(10) { animation-delay: 0.36s; }
.signal-card:nth-child(11) { animation-delay: 0.40s; }
.signal-card:nth-child(12) { animation-delay: 0.44s; }
.signal-card:nth-child(13) { animation-delay: 0.48s; }
.signal-card:nth-child(14) { animation-delay: 0.52s; }
.signal-card:nth-child(15) { animation-delay: 0.56s; }

/* Responsive */
@media (max-width: 480px) {
    .signals-date-nav { gap: 12px; padding: 14px; }
    .signal-card { padding: 14px 16px; }
    .signal-card-right { gap: 10px; }
    .signal-price { font-size: 0.85rem; }
    .signal-card-center { display: none; }
}

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 900;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background 0.2s ease, color 0.2s ease;
    box-shadow: var(--shadow-md);
}
.scroll-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.scroll-top:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}
.scroll-top:active {
    transform: translateY(0);
}

/* ============================================
   Animations
   ============================================ */

@keyframes sigSlideIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes sigFadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .logo-text {
        font-size: 1.1rem;
    }

    .hero {
        min-height: calc(80vh - var(--header-height));
        padding: 40px 16px;
    }

    .hero-logo {
        width: min(70%, 280px);
        margin-bottom: 24px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .features-section {
        padding: 48px 16px;
    }

    .page-container {
        padding: 20px 16px;
    }

    .embed-wrapper {
        height: calc(100vh - var(--header-height) - 80px);
        border-radius: var(--radius-md);
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-brand {
        flex-direction: column;
    }

    .footer-links {
        justify-content: center;
    }

    .footer-copy {
        margin-top: 12px;
    }

    .db-controls {
        flex-direction: column;
    }

    .db-select {
        width: 100%;
    }

    .db-status {
        margin-left: 0;
    }
}

@media (max-width: 480px) {
    :root {
        --header-height: 56px;
    }

    .logo-img {
        height: 30px;
    }

    .hero h1 {
        font-size: 1.6rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }
}