/**
 * ShadowCrypt Zero - Main Stylesheet
 * Theme: Cyber-Sec Professional
 * 
 * Color Palette:
 * - Background: #1e1e1e (Deep Charcoal)
 * - Primary: #00f3ff (Cyan - Active/Encrypt)
 * - Warning: #ffbf00 (Amber - Decrypt/Warning)
 * - Danger: #ff0055 (Red - Destruct)
 * - Success: #00ff88 (Green - Secure/Verified)
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Colors */
    --bg-primary: #1e1e1e;
    --bg-secondary: #252525;
    --bg-tertiary: #2d2d2d;
    --bg-input: #1a1a1a;
    --bg-hover: #333333;
    
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    
    --accent-cyan: #00f3ff;
    --accent-cyan-dim: #00a3aa;
    --accent-amber: #ffbf00;
    --accent-amber-dim: #aa7f00;
    --accent-red: #ff0055;
    --accent-red-dim: #aa0038;
    --accent-green: #00ff88;
    --accent-green-dim: #00aa5c;
    --accent-purple: #a855f7;
    
    /* Borders */
    --border-color: #333333;
    --border-light: #444444;
    --border-focus: var(--accent-cyan);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow-cyan: 0 0 20px rgba(0, 243, 255, 0.3);
    --shadow-glow-amber: 0 0 20px rgba(255, 191, 0, 0.3);
    --shadow-glow-red: 0 0 20px rgba(255, 0, 85, 0.3);
    --shadow-glow-green: 0 0 20px rgba(0, 255, 136, 0.3);
    
    /* Typography */
    --font-mono: 'Roboto Mono', 'Fira Code', 'Courier New', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-modal: 200;
    --z-toast: 300;
    --z-tooltip: 400;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Selection */
::selection {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-cyan-dim);
}

/* Monospace for crypto data */
.mono, .fingerprint, .hash, .key-data, code, pre {
    font-family: var(--font-mono);
}

/* ============================================
   LAYOUT
   ============================================ */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: var(--z-dropdown);
    transition: transform var(--transition-normal);
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-text span {
    color: var(--accent-cyan);
}

.zero-storage-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--accent-green);
    margin-top: var(--spacing-xs);
}

.zero-storage-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

/* Navigation Menu */
.nav-menu {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.nav-section {
    margin-bottom: var(--spacing-md);
}

.nav-section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(0, 243, 255, 0.1);
    color: var(--accent-cyan);
    border-left: 3px solid var(--accent-cyan);
}

.nav-item.premium::after {
    content: 'PRO';
    font-size: 0.625rem;
    background: var(--accent-purple);
    color: white;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    margin-left: auto;
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: 280px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Top Bar */
.top-bar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: var(--z-dropdown);
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
}

.page-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.user-fingerprint {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-green);
}

.status-indicator.offline {
    background: var(--accent-red);
}

.panic-btn {
    background: var(--accent-red);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.panic-btn:hover {
    background: var(--accent-red-dim);
    box-shadow: var(--shadow-glow-red);
}

/* Content Area */
.content-area {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
}

/* ============================================
   CARDS & PANELS
   ============================================ */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.panel {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-cyan-dim);
    box-shadow: var(--shadow-glow-cyan);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--accent-cyan);
}

.btn-warning {
    background: var(--accent-amber);
    color: var(--bg-primary);
}

.btn-warning:hover:not(:disabled) {
    background: var(--accent-amber-dim);
    box-shadow: var(--shadow-glow-amber);
}

.btn-danger {
    background: var(--accent-red);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: var(--accent-red-dim);
    box-shadow: var(--shadow-glow-red);
}

.btn-success {
    background: var(--accent-green);
    color: var(--bg-primary);
}

.btn-success:hover:not(:disabled) {
    background: var(--accent-green-dim);
    box-shadow: var(--shadow-glow-green);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.75rem;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1rem;
}

.btn-icon {
    padding: var(--spacing-sm);
    width: 40px;
    height: 40px;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 243, 255, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    font-family: var(--font-mono);
}

.form-input.mono {
    font-family: var(--font-mono);
}

.form-hint {
    margin-top: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.form-error {
    margin-top: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--accent-red);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-cyan);
    cursor: pointer;
}

/* Range Slider */
.form-range {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    appearance: none;
    cursor: pointer;
}

.form-range::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-cyan);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* ============================================
   TABS
   ============================================ */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.tab {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    font-weight: 500;
}

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

.tab.active {
    color: var(--accent-cyan);
    border-bottom-color: var(--accent-cyan);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================
   IDENTITY GATE (Login Screen)
   ============================================ */
.identity-gate {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--bg-primary) 0%, #0a0a0a 100%);
}

.identity-gate-logo {
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.identity-gate-logo .logo-icon {
    width: 80px;
    height: 80px;
    font-size: 3rem;
    margin: 0 auto var(--spacing-lg);
}

.identity-gate-logo h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.identity-gate-logo p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.identity-cards {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.identity-card {
    width: 320px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.identity-card:hover {
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-glow-cyan);
    transform: translateY(-4px);
}

.identity-card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.identity-card h3 {
    margin-bottom: var(--spacing-sm);
}

.identity-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ============================================
   MODALS
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* ============================================
   DROP ZONE (File Upload)
   ============================================ */
.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--accent-cyan);
    background: rgba(0, 243, 255, 0.05);
}

.drop-zone-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-muted);
}

.drop-zone-text {
    color: var(--text-secondary);
}

.drop-zone-text strong {
    color: var(--accent-cyan);
}

/* ============================================
   CHAT INTERFACE
   ============================================ */
.chat-container {
    display: flex;
    height: calc(100vh - 120px);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.chat-sidebar {
    width: 280px;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.chat-contacts {
    flex: 1;
    overflow-y: auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    border-left: 3px solid transparent;
}

.contact-item:hover {
    background: var(--bg-hover);
}

.contact-item.active {
    background: rgba(0, 243, 255, 0.1);
    border-left-color: var(--accent-cyan);
}

.contact-avatar {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--accent-cyan);
}

.contact-info {
    flex: 1;
}

.contact-name {
    font-weight: 500;
    margin-bottom: 2px;
}

.contact-status {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.contact-status.online {
    color: var(--accent-green);
}

.contact-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-green);
}

.contact-status-dot.offline {
    background: var(--text-muted);
}

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.chat-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.message {
    max-width: 70%;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    position: relative;
}

.message.outgoing {
    align-self: flex-end;
    background: var(--accent-cyan);
    color: var(--bg-primary);
    border-bottom-right-radius: var(--radius-sm);
}

.message.incoming {
    align-self: flex-start;
    background: var(--bg-tertiary);
    border-bottom-left-radius: var(--radius-sm);
}

.message-encrypted {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.message-time {
    font-size: 0.625rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.message-timer {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
}

.message-timer svg {
    transform: rotate(-90deg);
}

.message-timer circle {
    fill: none;
    stroke: var(--accent-red);
    stroke-width: 2;
    stroke-dasharray: 60;
    stroke-dashoffset: 0;
    animation: countdown 30s linear forwards;
}

@keyframes countdown {
    to {
        stroke-dashoffset: 60;
    }
}

.chat-input {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
}

.chat-input textarea {
    flex: 1;
    min-height: 40px;
    max-height: 120px;
    resize: none;
}

.timer-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

/* ============================================
   VAULT FILE EXPLORER
   ============================================ */
.vault-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.vault-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.vault-breadcrumb span {
    color: var(--accent-cyan);
}

.vault-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

.vault-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.vault-item:hover {
    border-color: var(--accent-cyan);
    background: var(--bg-hover);
}

.vault-item-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.vault-item-name {
    font-size: 0.875rem;
    word-break: break-word;
}

.vault-item-size {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   STEGANOGRAPHY
   ============================================ */
.stego-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.stego-image {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.stego-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   HASH GENERATOR
   ============================================ */
.hash-result {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    word-break: break-all;
}

.hash-compare {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.hash-compare-result {
    font-size: 1.5rem;
}

.hash-compare-result.match {
    color: var(--accent-green);
}

.hash-compare-result.mismatch {
    color: var(--accent-red);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left: 4px solid var(--accent-green);
}

.toast.error {
    border-left: 4px solid var(--accent-red);
}

.toast.warning {
    border-left: 4px solid var(--accent-amber);
}

.toast.info {
    border-left: 4px solid var(--accent-cyan);
}

/* ============================================
   PROGRESS INDICATORS
   ============================================ */
.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

.progress-circle {
    width: 120px;
    height: 120px;
    position: relative;
}

.progress-circle svg {
    transform: rotate(-90deg);
}

.progress-circle circle {
    fill: none;
    stroke-width: 8;
}

.progress-circle .bg {
    stroke: var(--bg-tertiary);
}

.progress-circle .fg {
    stroke: var(--accent-cyan);
    stroke-linecap: round;
    transition: stroke-dashoffset var(--transition-normal);
}

.progress-circle-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
}

/* ============================================
   QR CODE
   ============================================ */
.qr-code {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    display: inline-block;
}

/* ============================================
   KEY DISPLAY
   ============================================ */
.key-display {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    word-break: break-all;
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
}

.fingerprint-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 1.25rem;
    letter-spacing: 0.1em;
}

.fingerprint-display .copy-btn {
    margin-left: auto;
}

/* ============================================
   API DASHBOARD
   ============================================ */
.api-key-display {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.api-key-display .key {
    flex: 1;
    word-break: break-all;
}

.api-key-display .visibility-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
}

.usage-chart {
    height: 200px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: flex-end;
    gap: 4px;
    padding: var(--spacing-md);
}

.usage-bar {
    flex: 1;
    background: var(--accent-cyan);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    transition: height var(--transition-normal);
}

/* ============================================
   SETTINGS
   ============================================ */
.settings-section {
    margin-bottom: var(--spacing-xl);
}

.settings-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.settings-row:last-child {
    border-bottom: none;
}

.settings-label {
    flex: 1;
}

.settings-description {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Toggle Switch */
.toggle {
    position: relative;
    width: 48px;
    height: 24px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 3px;
    bottom: 3px;
    background: var(--text-secondary);
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.toggle input:checked + .toggle-slider {
    background: var(--accent-cyan);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(24px);
    background: var(--bg-primary);
}

/* ============================================
   DANGER ZONE
   ============================================ */
.danger-zone {
    border: 2px solid var(--accent-red);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.danger-zone-title {
    color: var(--accent-red);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

.animate-fade-in {
    animation: fadeIn 0.3s ease;
}

.animate-slide-up {
    animation: slideUp 0.3s ease;
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-cyan { color: var(--accent-cyan); }
.text-amber { color: var(--accent-amber); }
.text-red { color: var(--accent-red); }
.text-green { color: var(--accent-green); }
.text-muted { color: var(--text-muted); }

.bg-cyan { background-color: var(--accent-cyan); }
.bg-amber { background-color: var(--accent-amber); }
.bg-red { background-color: var(--accent-red); }
.bg-green { background-color: var(--accent-green); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

.hidden { display: none; }
.block { display: block; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .identity-cards {
        flex-direction: column;
    }
    
    .identity-card {
        width: 100%;
        max-width: 320px;
    }
    
    .chat-sidebar {
        position: absolute;
        left: 0;
        right: 0;
        z-index: 10;
        background: var(--bg-secondary);
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }
    
    .chat-sidebar.open {
        transform: translateX(0);
    }
    
    .stego-preview {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    :root {
        font-size: 14px;
    }
    
    .top-bar {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .content-area {
        padding: var(--spacing-md);
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .user-fingerprint {
        display: none;
    }
    
    .vault-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .top-bar,
    .panic-btn,
    .btn {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
    }
}