/* EgoZone - Modern Dark Theme Styles */

:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-elevated: #22222e;

    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-tertiary: #6b6b7b;

    --accent-primary: #6366f1;
    --accent-secondary: #818cf8;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);

    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    /* Sizing */
    --sidebar-width: 260px;
    --header-height: 64px;

    /* Animation */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

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

html,
body {
    height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
}

/* App Layout */
.app {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

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

.logo-icon {
    font-size: 28px;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.5));
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
}

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

.nav-item.active {
    background: var(--accent-gradient);
    color: var(--text-primary);
    box-shadow: var(--shadow-glow);
}

.nav-icon {
    font-size: 18px;
}

.sidebar-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* Main Content */
.main-content {
    flex: 1;
    overflow: hidden;
    background: var(--bg-primary);
}

.page {
    display: none;
    height: 100%;
    overflow-y: auto;
}

.page.active {
    display: block;
}

/* Chat Page */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
}

.chat-title h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
}

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

.btn-icon {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 10px;
    background: var(--bg-tertiary);
    cursor: pointer;
    font-size: 16px;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--bg-elevated);
    transform: scale(1.05);
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    padding: 24px 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.welcome-message {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.welcome-avatar {
    font-size: 48px;
    flex-shrink: 0;
}

.welcome-content h2 {
    font-size: 18px;
    margin-bottom: 12px;
}

.welcome-content p {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.welcome-content strong {
    color: var(--accent-secondary);
}

/* Message Bubbles */
.message {
    display: flex;
    gap: 12px;
    animation: fadeIn 0.3s ease;
}

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

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

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.message.user .message-avatar {
    background: var(--accent-gradient);
}

.message.assistant .message-avatar {
    background: var(--bg-tertiary);
}

.message-bubble {
    max-width: 70%;
    padding: 14px 18px;
    border-radius: 16px;
    line-height: 1.5;
}

.message.user .message-bubble {
    background: var(--accent-gradient);
    border-bottom-right-radius: 4px;
}

.message.assistant .message-bubble {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 4px 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--text-tertiary);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {

    0%,
    60%,
    100% {
        transform: translateY(0);
    }

    30% {
        transform: translateY(-6px);
    }
}

/* Chat Input */
.chat-input-container {
    padding: 20px 0 24px;
    border-top: 1px solid var(--border-color);
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all var(--transition-fast);
}

.input-wrapper:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

#chat-input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    resize: none;
    min-height: 24px;
    max-height: 200px;
    outline: none;
}

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

.send-button {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 10px;
    background: var(--accent-gradient);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.send-button:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.input-hint {
    text-align: center;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 8px;
}

/* Page Header */
.page-header {
    padding: 32px 0 24px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.page-header p {
    color: var(--text-secondary);
}

/* Interview Page */
.interview-container,
.knowledge-container,
.settings-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px 48px;
}

.progress-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px 24px;
    margin-bottom: 24px;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-weight: 500;
}

.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 4px;
    transition: width var(--transition-slow);
}

.progress-text {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 12px;
}

.interview-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    margin-bottom: 32px;
}

.question-category {
    display: inline-block;
    padding: 6px 12px;
    background: var(--accent-gradient);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
}

.question-text {
    font-size: 20px;
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 24px;
}

.answer-input,
.knowledge-textarea {
    width: 100%;
    padding: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    resize: vertical;
    outline: none;
    transition: border-color var(--transition-fast);
}

.answer-input:focus,
.knowledge-textarea:focus,
.knowledge-input:focus {
    border-color: var(--accent-primary);
}

.interview-actions,
.knowledge-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    justify-content: flex-end;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

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

/* Categories */
.category-list h3 {
    margin-bottom: 16px;
    font-size: 16px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.category-card {
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.category-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.category-card h4 {
    font-size: 14px;
    margin-bottom: 8px;
}

.category-card p {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* Knowledge Page */
.knowledge-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    flex: 1;
    padding: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.add-knowledge-card,
.settings-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
}

.add-knowledge-card h3,
.settings-card h3 {
    margin-bottom: 16px;
    font-size: 16px;
}

.knowledge-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
    margin-bottom: 12px;
    outline: none;
}

.knowledge-list h3 {
    margin-bottom: 16px;
    font-size: 16px;
}

.knowledge-item {
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 12px;
}

.knowledge-item-title {
    font-weight: 600;
    margin-bottom: 8px;
}

.knowledge-item-content {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

.knowledge-item-meta {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 12px;
}

/* Settings Page */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-primary);
}

.form-group select {
    cursor: pointer;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 14px 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: 1000;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

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

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px;
    color: var(--text-tertiary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

/* Admin Styles */
.lock-icon {
    font-size: 12px;
    margin-left: auto;
    opacity: 0.6;
}

.nav-item.admin-only.unlocked .lock-icon {
    display: none;
}

.admin-btn {
    width: 100%;
    margin-top: 12px;
    padding: 10px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.admin-btn.logged-in {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 100%;
    max-width: 400px;
    margin: 20px;
    overflow: hidden;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: 24px;
}

.modal-body p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.password-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    transition: border-color var(--transition-fast);
}

.password-input:focus {
    border-color: var(--accent-primary);
}

.modal-actions {
    margin-top: 20px;
    display: flex;
    justify-content: flex-end;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    z-index: 101;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.mobile-menu-toggle:hover {
    background: var(--bg-tertiary);
}

/* Mobile Overlay */
.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

.mobile-overlay.show {
    display: block;
}

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .chat-container {
        padding: 0 16px;
    }

    .interview-container,
    .knowledge-container,
    .settings-container {
        padding: 0 16px 48px;
    }

    .knowledge-stats {
        flex-wrap: wrap;
    }

    .stat-card {
        min-width: 45%;
    }
}

/* Responsive - Mobile */
@media (max-width: 768px) {

    /* Show mobile menu toggle */
    .mobile-menu-toggle {
        display: flex;
    }

    /* Sidebar as drawer */
    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        z-index: 100;
        height: 100%;
        width: 280px;
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

    .sidebar.open {
        left: 0;
    }

    /* Main content full width */
    .main-content {
        width: 100%;
        margin-left: 0;
    }

    /* Chat adjustments */
    .chat-container {
        padding: 0 12px;
        max-width: 100%;
    }

    .chat-header {
        padding: 70px 0 16px;
    }

    .chat-title h1 {
        font-size: 20px;
    }

    .message-bubble {
        max-width: 85%;
        padding: 12px 14px;
        font-size: 14px;
    }

    .message-avatar {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .welcome-message {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }

    .welcome-avatar {
        font-size: 36px;
    }

    .welcome-content h2 {
        font-size: 16px;
    }

    .welcome-content p {
        font-size: 14px;
    }

    /* Chat input */
    .chat-input-container {
        padding: 12px 0 16px;
    }

    .input-wrapper {
        padding: 10px 12px;
    }

    #chat-input {
        font-size: 14px;
    }

    .send-button {
        width: 36px;
        height: 36px;
    }

    .input-hint {
        font-size: 11px;
    }

    /* Page headers */
    .page-header {
        padding: 60px 0 16px;
        margin-bottom: 16px;
    }

    .page-header h1 {
        font-size: 22px;
    }

    /* Interview, Knowledge, Settings */
    .interview-container,
    .knowledge-container,
    .settings-container {
        padding: 0 12px 32px;
        max-width: 100%;
    }

    .progress-card {
        padding: 16px;
        margin-bottom: 16px;
    }

    .interview-card {
        padding: 20px;
        margin-bottom: 20px;
    }

    .question-text {
        font-size: 16px;
    }

    .answer-input,
    .knowledge-textarea {
        font-size: 14px;
        padding: 12px;
    }

    .interview-actions,
    .knowledge-actions {
        flex-direction: column;
    }

    .interview-actions .btn,
    .knowledge-actions .btn {
        width: 100%;
    }

    /* Categories grid */
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .category-card {
        padding: 12px;
    }

    .category-card h4 {
        font-size: 13px;
    }

    .category-card p {
        font-size: 11px;
    }

    /* Knowledge stats */
    .knowledge-stats {
        flex-direction: column;
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
    }

    .stat-number {
        font-size: 28px;
    }

    .add-knowledge-card,
    .settings-card {
        padding: 16px;
        margin-bottom: 16px;
    }

    /* Form groups */
    .form-group input,
    .form-group select {
        padding: 12px 14px;
        font-size: 14px;
    }

    /* Buttons */
    .btn {
        padding: 12px 20px;
        font-size: 14px;
        width: 100%;
    }

    /* Modal */
    .modal-content {
        margin: 16px;
        max-width: calc(100% - 32px);
    }

    .modal-header {
        padding: 16px 20px;
    }

    .modal-header h2 {
        font-size: 16px;
    }

    .modal-body {
        padding: 20px;
    }

    /* Admin button */
    .admin-btn {
        padding: 12px 16px;
        font-size: 14px;
    }

    /* Sidebar footer */
    .sidebar-footer {
        padding: 16px 20px;
    }

    /* Knowledge list */
    .knowledge-item {
        padding: 12px;
    }

    .knowledge-item-title {
        font-size: 14px;
    }

    .knowledge-item-content {
        font-size: 13px;
    }
}

/* Responsive - Small Mobile */
@media (max-width: 480px) {
    .chat-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .categories-grid {
        grid-template-columns: 1fr;
    }

    .message-bubble {
        max-width: 90%;
    }

    .logo-text {
        font-size: 18px;
    }

    .nav-item {
        padding: 12px 14px;
    }
}