* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4F46E5;
    --primary-hover: #4338CA;
    --secondary-color: #6366F1;
    --background: #0F172A;
    --surface: #1E293B;
    --surface-light: #334155;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --border-color: #334155;
    --success: #10B981;
    --error: #EF4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--background) 0%, #1a1f3a 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background: var(--surface);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.user-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.logout-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
}

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

/* Auth Forms */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-box {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.auth-box h1 {
    text-align: center;
    margin-bottom: 0.5rem;
    font-size: 1.8rem;
    color: var(--primary-color);
}

.auth-box p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn:hover {
    background: var(--primary-hover);
}

.auth-switch {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-switch a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    text-decoration: underline;
}

.alert {
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

/* Dashboard */
.dashboard-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.dashboard-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.personas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.persona-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.persona-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.3);
}

.persona-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: bold;
    color: white;
}

.persona-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.persona-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.persona-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.heygen-status-notice {
    margin-top: 1rem;
    padding: 0.5rem;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid #F59E0B;
    border-radius: 0.5rem;
    font-size: 0.8rem;
    color: #FCD34D;
    text-align: center;
}

/* Chat Interface */
.chat-container {
    max-width: 900px;
    margin: 0 auto;
    height: calc(100vh - 100px);
    display: flex;
    flex-direction: column;
}

.chat-header {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem 1rem 0 0;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.chat-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    font-weight: bold;
}

.chat-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.chat-title h2 {
    font-size: 1.3rem;
    margin-bottom: 0.25rem;
}

.chat-title p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.chat-messages {
    flex: 1;
    background: var(--background);
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    padding: 2rem;
    overflow-y: auto;
}

.message {
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.message.user .message-avatar {
    background: var(--primary-color);
    color: white;
}

.message.assistant .message-avatar {
    background: linear-gradient(135deg, #10B981, #059669);
    color: white;
}

.message-content {
    max-width: 70%;
    background: var(--surface);
    padding: 1rem;
    border-radius: 1rem;
    line-height: 1.5;
}

.message.user .message-content {
    background: var(--primary-color);
    color: white;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.chat-input-container {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 0 0 1rem 1rem;
    padding: 1.5rem;
}

.chat-input-form {
    display: flex;
    gap: 1rem;
}

.chat-input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    resize: none;
    min-height: 50px;
    max-height: 150px;
}

.chat-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.send-btn {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    align-self: flex-end;
}

.send-btn:hover:not(:disabled) {
    background: var(--primary-hover);
}

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

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--primary-color);
}

.loading {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
}

/* Video Player Styles */
.play-video-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 0.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.play-video-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.play-video-btn .video-icon {
    font-size: 1rem;
}

.video-notice {
    margin-top: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--secondary-color);
    border-radius: 0.5rem;
    display: inline-block;
}

.video-notice small {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.video-notice a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.video-notice a:hover {
    text-decoration: underline;
}

/* Video Modal */
.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.95);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.video-modal-content {
    background: var(--surface);
    border-radius: 1rem;
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.video-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.video-modal-header h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin: 0;
}

.close-modal-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    transition: color 0.2s;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
}

.close-modal-btn:hover {
    color: var(--text-primary);
    background: var(--surface-light);
}

.video-player-container {
    padding: 2rem;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Video Element */
#heygenVideo {
    width: 100%;
    max-width: 512px;
    border-radius: 0.5rem;
    background: black;
}

/* Loading Spinner */
.video-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--surface-light);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.video-loading p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Video Error */
.video-error {
    text-align: center;
    color: var(--error);
    padding: 2rem;
}

.video-error p {
    font-size: 1rem;
    margin: 0;
}

/* Dashboard Header with Create Button */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-primary {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
}

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

.btn-danger {
    padding: 0.75rem 1.5rem;
    background: var(--error);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
}

.btn-danger:hover {
    background: #DC2626;
}

/* Persona Card Wrapper for Edit Button */
.persona-card-wrapper {
    position: relative;
}

.persona-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 10;
}

.system-badge {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
    border: 1px solid var(--success);
}

.custom-badge {
    background: rgba(99, 102, 241, 0.2);
    color: var(--secondary-color);
    border: 1px solid var(--secondary-color);
}

.persona-actions {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    z-index: 10;
}

.btn-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--surface-light);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-icon:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: scale(1.1);
}

/* Form Container */
.form-container {
    max-width: 700px;
    margin: 2rem auto;
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2.5rem;
}

.form-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

/* Form Elements */
.persona-form .form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.required {
    color: var(--error);
}

.help-icon {
    display: inline-block;
    width: 18px;
    height: 18px;
    text-align: center;
    background: var(--surface-light);
    border-radius: 50%;
    font-size: 0.75rem;
    cursor: help;
    margin-left: 0.25rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    resize: vertical;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-select {
    width: 100%;
    padding: 0.75rem;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.char-counter {
    display: block;
    text-align: right;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.help-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Avatar Upload */
.avatar-upload-container {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.avatar-preview {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.avatar-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
}

.avatar-placeholder span {
    font-size: 3rem;
}

.avatar-placeholder p {
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.avatar-upload-controls {
    flex: 1;
}

.file-input {
    display: none;
}

.file-label {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.file-label:hover {
    background: var(--primary-hover);
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.form-actions .btn {
    width: auto;
}

/* Form Message */
.form-message {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
    font-size: 0.95rem;
}

.form-message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

/* Status Messages */
.status-message {
    padding: 1rem;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.status-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.status-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid #F59E0B;
    color: #FCD34D;
}

.btn-link {
    background: transparent;
    border: none;
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
    font-size: 0.9rem;
    padding: 0;
}

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

/* Dashboard Actions */
.dashboard-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

/* Share Section */
.share-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.share-key-display {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
}

.share-key-box {
    flex: 1;
    background: var(--background);
    border: 2px solid var(--primary-color);
    border-radius: 0.5rem;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.share-key-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
}

.share-key-value {
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    letter-spacing: 3px;
    font-weight: bold;
    color: var(--primary-color);
}

/* Import Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.95);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--surface);
    border-radius: 1rem;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin: 0;
}

.modal-body {
    padding: 1.5rem;
}

.modal-body p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .personas-grid {
        grid-template-columns: 1fr;
    }

    .chat-container {
        height: calc(100vh - 80px);
    }

    .message-content {
        max-width: 85%;
    }

    .auth-box {
        padding: 2rem;
    }

    .video-modal-content {
        width: 95%;
    }

    .video-player-container {
        padding: 1rem;
        min-height: 300px;
    }

    .play-video-btn {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }

    .form-container {
        padding: 1.5rem;
    }

    .avatar-upload-container {
        flex-direction: column;
        text-align: center;
    }

    .dashboard-header {
        text-align: center;
        justify-content: center;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}