:root {
    /* Onyx & White Premium Palette */
    --bg-dark: #0A0A0A; /* Deep Onyx */
    --bg-surface: #141414; /* Onyx Surface */
    --bg-surface-hover: #1F1F1F;
    --bg-glass: rgba(255, 255, 255, 0.02);
    --border-color: rgba(255, 255, 255, 0.05);
    --border-glass: rgba(255, 255, 255, 0.08);
    
    --text-primary: #FFFFFF;
    --text-secondary: #A3A3A3;
    --text-muted: #525252;
    
    --primary: #FFFFFF; /* White Primary */
    --primary-hover: #E5E5E5;
    --accent: #10B981;
    --accent-hover: #34D399;
    --error: #EF4444;
    --success: #10B981;
    
    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* Light Theme Overrides (White & Onyx) */
.light-theme {
    --bg-dark: #FFFFFF;
    --bg-surface: #F8FAFC; /* Slightly darker than pure white for depth */
    --bg-surface-hover: #F1F5F9;
    --bg-glass: rgba(0, 0, 0, 0.05);
    --border-color: rgba(0, 0, 0, 0.1);
    --border-glass: rgba(0, 0, 0, 0.12);
    
    --text-primary: #0F172A; /* Slate 900 */
    --text-secondary: #334155; /* Slate 700 - Darker than before */
    --text-muted: #64748B; /* Slate 500 - More legible */
    
    --primary: #0F172A; /* Onyx Primary */
    --primary-hover: #1E293B;
    --accent: #059669;
    --accent-hover: #047857;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.hidden {
    display: none !important;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    line-height: 1.5;
}

/* App Layout */
.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 300px;
    flex-shrink: 0;
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    padding: 2.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem; /* Grouped feel */
    box-shadow: var(--shadow-lg);
    z-index: 10;
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.icon-btn:hover {
    background-color: var(--bg-surface-hover);
    color: var(--text-primary);
}

.icon-btn i {
    width: 18px;
    height: 18px;
}

.sidebar-header h2 {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.badge {
    background-color: var(--primary);
    color: var(--bg-dark);
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.upload-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.upload-section h3 {
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.08em;
}

.danger-btn {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error, #EF4444);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md, 8px);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition, all 0.3s ease);
    width: 100%;
    margin-top: 1rem;
}
.danger-btn:hover {
    background-color: var(--error, #EF4444);
    color: white;
}

.text-btn {
    background: transparent;
    border: none;
    color: var(--text-muted, #64748b);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: color 0.3s ease;
}
.text-btn:hover {
    color: var(--error, #EF4444);
}

.user-profile {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
#display-username {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.upload-section p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

/* Custom File Input */
#upload-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

input[type="file"] {
    display: none;
}

.file-label {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem;
    background-color: var(--bg-dark);
    border: 1px dashed var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8125rem;
    line-height: 1.4;
}

.file-label:hover {
    border-color: var(--primary);
    color: var(--text-primary);
    background-color: var(--bg-surface-hover);
}

.file-name {
    font-size: 0.75rem;
    color: var(--text-muted);
    word-break: break-all;
    text-align: left;
    padding-left: 0.5rem;
    border-left: 2px solid var(--border-color);
}

.primary-btn {
    background-color: var(--primary);
    color: var(--bg-dark);
    border: 1px solid var(--primary);
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: center;
    align-items: center;
}

.primary-btn:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.primary-btn:disabled {
    background-color: var(--bg-surface-hover);
    border-color: var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.status-msg {
    margin-top: 1rem;
    font-size: 0.85rem;
    padding: 0.75rem;
    border-radius: 4px;
    text-align: center;
}

.status-msg.hidden {
    display: none;
}

.status-msg.success {
    background-color: rgba(46, 125, 50, 0.1);
    color: #81c784;
    border: 1px solid rgba(46, 125, 50, 0.2);
}

.status-msg.error {
    background-color: rgba(198, 40, 40, 0.1);
    color: #e57373;
    border: 1px solid rgba(198, 40, 40, 0.2);
}

/* Chat Main Area */
.chat-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-dark);
}

.chat-header {
    padding: 1.25rem 2.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center; /* Ensures baseline alignment */
    background-color: var(--bg-surface);
    backdrop-filter: blur(20px);
    z-index: 5;
}

.header-titles {
    display: flex;
    flex-direction: column;
}

.header-titles h3 {
    font-weight: 700;
    font-size: 1.125rem;
    margin: 0;
    line-height: 1.2;
}

.header-titles p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.secondary-btn {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.secondary-btn:hover {
    background-color: var(--bg-surface-hover);
    border-color: var(--text-secondary);
}

.chat-window {
    flex-grow: 1;
    padding: 2.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    scroll-behavior: smooth;
}

.message {
    display: flex;
    gap: 1.25rem;
    max-width: 95%;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.ai .avatar {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--primary);
}

.user .avatar {
    background-color: var(--primary);
    color: var(--bg-dark);
}

.msg-content {
    background-color: var(--bg-surface);
    padding: 1.125rem 1.5rem;
    border-radius: 1.25rem;
    line-height: 1.65;
    font-size: 0.9375rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.user .msg-content {
    background-color: var(--primary);
    border-color: transparent;
    color: var(--bg-dark);
    border-bottom-right-radius: 4px;
}

.ai .msg-content {
    background: var(--bg-surface);
    border-bottom-left-radius: 4px;
}

/* Markdown Styling */
.msg-content p {
    margin-bottom: 0.75rem;
}

.msg-content p:last-child {
    margin-bottom: 0;
}

.msg-content ul, .msg-content ol {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
}

.msg-content li {
    margin-bottom: 0.25rem;
}

.msg-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.85rem;
    background-color: rgba(255, 255, 255, 0.03);
    border-radius: 4px;
    overflow: hidden;
}

.msg-content th, .msg-content td {
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.msg-content th {
    background-color: var(--bg-dark);
    font-weight: 600;
}

.msg-content code {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9em;
}

.msg-content pre {
    background-color: var(--bg-dark);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
    border: 1px solid var(--border-color);
}

.msg-content pre code {
    background-color: transparent;
    padding: 0;
    display: block;
}

/* Loader */
.typing-indicator {
    display: flex;
    gap: 0.3rem;
    padding: 1.2rem 1.5rem;
    background-color: var(--bg-surface);
    border-radius: 8px;
    width: fit-content;
}

.dot {
    width: 6px;
    height: 6px;
    background-color: var(--text-secondary);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.dot:nth-child(1) {
    animation-delay: -0.32s;
}

.dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {

    0%,
    80%,
    100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1);
    }
}

/* Sample Questions */
.sample-questions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0 2.5rem 1rem;
}



.sample-badge {
    background-color: var(--bg-glass);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    transition: var(--transition);
}

.sample-badge:hover {
    background-color: var(--bg-surface-hover);
    border-color: var(--text-muted);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.sample-badge:active {
    transform: translateY(0);
}

/* Chat Input */
.chat-input-area {
    padding: 1.5rem 2.5rem 2.5rem;
    background-color: transparent;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

#chat-input {
    flex-grow: 1;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 1.125rem 1.5rem;
    border-radius: 2rem;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

#chat-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--border-glass);
}

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

.send-btn {
    background-color: var(--primary);
    color: white;
    border: none;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.send-btn:hover {
    background-color: var(--primary-hover);
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.send-btn:active {
    transform: scale(0.95);
}

.send-btn:disabled {
    background-color: var(--bg-surface-hover);
    color: var(--text-muted);
    cursor: not-allowed;
    transform: none;
}

.send-icon {
    width: 20px;
    height: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 1.5rem;
    }

    .message {
        max-width: 95%;
    }
}

/* --- PRECISION-ENGINEERED LANDING PAGE UI (ONYX & WHITE) --- */

.auth-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #fff;
    color: #000;
    z-index: 1000;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    selection-background-color: #000;
    selection-color: #fff;
}

.fixed-background {
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 1;
    background: radial-gradient(circle at 50% 0%, rgba(107, 70, 254, 0.08) 0%, transparent 60%);
    z-index: -1;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    background-color: rgba(255,255,255,0.7);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
}

.nav-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 3rem;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-box {
    width: 40px;
    height: 40px;
    background-color: #000;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-weight: 800;
    font-size: 1.25rem;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
}

.logo-text {
    font-weight: 800;
    letter-spacing: -0.05em;
    font-size: 1.5rem;
    color: #000;
}

.nav-links {
    display: none;
}
@media (min-width: 768px) {
    .nav-links {
        display: flex;
        gap: 2rem;
        align-items: center;
    }
}
.nav-links a {
    text-decoration: none;
    color: #1A1A1A;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s ease;
}
.nav-links a:hover {
    color: #6B46FE;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-ghost-purple {
    border: 1.5px solid #6B46FE;
    background-color: transparent;
    color: #6B46FE;
    border-radius: 40px;
    padding: 8px 24px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}
.btn-ghost-purple:hover {
    background-color: #6B46FE;
    color: #fff;
}

.btn-light-purple {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: #F0EDFF;
    color: #6B46FE;
    border-radius: 40px;
    padding: 8px 24px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}
.btn-light-purple:hover {
    background-color: #E2DBFF;
}

.btn-primary-purple {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background-color: #6B46FE;
    color: #FFF;
    border-radius: 100px;
    padding: 16px 40px;
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(107, 70, 254, 0.3);
    transition: all 0.3s ease;
}
.btn-primary-purple:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(107, 70, 254, 0.4);
}

.user-auth-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.auth-status {
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: rgba(0,0,0,0.4);
}

.user-login {
    font-size: 0.875rem;
    font-weight: 700;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 9999px;
    border: 2px solid rgba(0,0,0,0.05);
}

.logout-btn {
    width: 40px;
    height: 40px;
    border-radius: 9999px;
    border: none;
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(0,0,0,0.4);
    cursor: pointer;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background-color: rgba(0,0,0,0.05);
    color: #000;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 3rem;
    position: relative;
}

.hero-container {
    max-width: 1440px;
    margin: 0 auto;
    width: 100%;
    padding-top: 10rem;
    padding-bottom: 12rem;
}

.hero-tag-line {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.tag-dash {
    height: 1px;
    width: 48px;
    background-color: rgba(0,0,0,0.1);
}

.tag-text {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: rgba(0,0,0,0.3);
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 2rem;
    max-width: 1000px;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.hero-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.hero-subtitle {
    font-size: 18px;
    color: #4A4A4A;
    max-width: 800px;
    line-height: 1.6;
    font-weight: 400;
    text-align: center;
    margin: 0 auto;
}

.text-faded {
    color: #000;
    opacity: 0.1;
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: default;
}

.text-faded:hover {
    opacity: 1;
}

.hero-cta-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    margin-top: 1rem;
}

.begin-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background-color: #000;
    color: #fff;
    padding: 1.5rem 3rem;
    border-radius: 2rem;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.2);
}

.begin-btn:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.begin-btn i.fa-arrow-right {
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.begin-btn:hover i.fa-arrow-right {
    transform: translateX(12px);
}

.builders-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: flex-end;
    padding-right: 1rem;
}

.avatar-stack {
    display: flex;
}

.avatar-sm {
    width: 40px;
    height: 40px;
    border-radius: 9999px;
    border: 4px solid #fff;
    background-color: rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    margin-left: -12px;
}

.builders-text {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(0,0,0,0.3);
}

.side-rail-fixed {
    position: fixed;
    right: 3rem;
    top: 50%;
    transform: translateY(-50%);
    display: none;
    z-index: 20;
}

@media (min-width: 1440px) {
    .side-rail-fixed {
        display: block;
    }
}

.rail-inner {
    writing-mode: vertical-rl;
    font-size: 10px;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 0.6em;
    color: rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 3rem;
}

.rail-line {
    height: 120px;
    width: 1px;
    background-color: rgba(0,0,0,0.1);
}

/* Capabilities Section */
.capabilities-section {
    max-width: 1440px;
    margin: 0 auto;
    padding: 12rem 3rem;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.capabilities-header {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 8rem;
    gap: 2rem;
}

@media (min-width: 768px) {
    .capabilities-header {
        flex-direction: row;
    }
}

.cap-section-title {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.05em;
}

.sync-status {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(0,0,0,0.3);
}

.cap-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6rem 4rem;
}

@media (min-width: 768px) {
    .cap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .cap-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.cap-card-item {
    position: relative;
    padding: 3rem;
    border-radius: 2.5rem;
    background-color: #f8f8f8;
    border: 1px solid rgba(0,0,0,0.05);
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.cap-card-item:hover {
    transform: scale(1.05);
    background-color: #000;
    color: #fff;
    box-shadow: 0 40px 60px -15px rgba(0,0,0,0.3);
}

.cap-num {
    position: absolute;
    left: -1rem;
    top: 1rem;
    font-family: monospace;
    font-size: 10px;
    font-weight: 700;
    color: rgba(0,0,0,0.1);
    transition: color 0.3s ease;
}

.cap-card-item:hover .cap-num {
    color: rgba(255,255,255,0.3);
}

.cap-icon-box {
    width: 72px;
    height: 72px;
    border-radius: 1.75rem;
    background-color: rgba(0,0,0,0.03);
    border: 1px solid rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.cap-card-item:hover .cap-icon-box {
    background-color: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.1);
    color: #fff;
}

.cap-card-title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}

.cap-card-desc {
    color: rgba(0,0,0,0.5);
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    transition: color 0.3s ease;
}

.cap-card-item:hover .cap-card-desc {
    color: rgba(255,255,255,0.6);
}

.cap-badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.cap-badge {
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    background-color: rgba(0,0,0,0.03);
    border: 1px solid rgba(0,0,0,0.02);
    font-size: 11px;
    font-family: monospace;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(0,0,0,0.4);
    transition: all 0.3s ease;
}

.cap-card-item:hover .cap-badge {
    background-color: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
}

/* Security Section */
.security-section {
    background-color: rgba(0,0,0,0.02);
    padding: 12rem 3rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.security-flex {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 6rem;
}

@media (min-width: 1024px) {
    .security-flex {
        flex-direction: row;
        align-items: center;
    }
}

.security-text-block {
    flex: 1;
}

.security-icon-circle {
    width: 80px;
    height: 80px;
    background-color: #000;
    color: #fff;
    border-radius: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.2);
}

.security-heading {
    font-size: clamp(3.5rem, 8vw, 6rem);
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 0.9;
    margin-bottom: 2.5rem;
}

.security-subtext {
    font-size: 1.5rem;
    color: rgba(0,0,0,0.4);
    line-height: 1.6;
    max-width: 600px;
    font-weight: 500;
}

.security-spec-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

.spec-card {
    padding: 2.5rem;
    border-radius: 2.5rem;
    background-color: #fff;
    border: 1px solid rgba(0,0,0,0.05);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.spec-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 30px -10px rgba(0,0,0,0.05);
}

.spec-dot {
    width: 10px;
    height: 10px;
    background-color: #000;
    border-radius: 9999px;
    margin-bottom: 1.5rem;
}

.spec-title {
    font-weight: 800;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.spec-desc {
    font-size: 1rem;
    color: rgba(0,0,0,0.3);
    font-weight: 600;
}

/* CTA Banner */
.cta-banner-section {
    padding: 8rem 3rem;
}

.cta-banner-card {
    max-width: 1440px;
    margin: 0 auto;
    background-color: #000;
    border-radius: 4rem;
    padding: 10rem 4rem;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 0 40px 80px -20px rgba(0,0,0,0.4);
}

.cta-banner-title {
    font-size: clamp(3.5rem, 10vw, 8rem);
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 0.85;
    margin-bottom: 4rem;
    position: relative;
    z-index: 10;
}

.cta-banner-btn {
    display: inline-flex;
    align-items: center;
    gap: 1.5rem;
    background-color: #fff;
    color: #000;
    padding: 1.75rem 4rem;
    border-radius: 2.5rem;
    font-size: 2rem;
    font-weight: 800;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    z-index: 10;
}

.cta-banner-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 40px -10px rgba(255,255,255,0.2);
}

.cta-glow-effect {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-color: #fff;
    opacity: 0.05;
    filter: blur(120px);
    border-radius: 9999px;
    transform: translate(40%, -30%);
}

/* Site Footer */
.site-footer {
    padding: 10rem 3rem 6rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    max-width: 1440px;
    margin: 0 auto;
    width: 100%;
}

.footer-grid {
    display: flex;
    flex-direction: column;
    gap: 6rem;
    margin-bottom: 8rem;
}

@media (min-width: 1024px) {
    .footer-grid {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-brand-col {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.logo.small .logo-box { width: 32px; height: 32px; border-radius: 10px; font-size: 1rem; }
.logo.small .logo-text { font-size: 1.25rem; }

.footer-brand-pitch {
    font-size: 1.125rem;
    color: rgba(0,0,0,0.4);
    max-width: 380px;
    line-height: 1.6;
    font-weight: 500;
}

.footer-links-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6rem;
}

@media (min-width: 640px) {
    .footer-links-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-link-col {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.footer-col-label {
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: rgba(0,0,0,0.2);
}

.footer-link-col a {
    font-size: 1rem;
    font-weight: 600;
    color: rgba(0,0,0,0.4);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link-col a:hover {
    color: #000;
}

.footer-status-row {
    padding-top: 4rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 768px) {
    .footer-status-row {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-copyright {
    font-family: monospace;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: rgba(0,0,0,0.1);
}

.footer-status-pill {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.25rem;
    background-color: rgba(0,0,0,0.05);
    border-radius: 9999px;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: rgba(0,0,0,0.3);
    border: 1px solid rgba(0,0,0,0.05);
}

.status-pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #22c55e;
    border-radius: 9999px;
    animation: statusPulse 2s infinite;
}

@keyframes statusPulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.6); opacity: 0.4; }
    100% { transform: scale(1); opacity: 1; }
}

/* Animations */
.hero-container {
    animation: slideUpFade 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUpFade {
    from { opacity: 0; transform: translateY(60px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- END PRECISION-ENGINEERED UI --- */