/* Exploration Geophysics AI Dark Theme Styles */
:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --accent-primary: #ff6b6b;
    --accent-secondary: #4ecdc4;
    --border-color: #333333;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Footer */
.app-footer {
    width: 100%;
    padding: 16px 20px;
    text-align: center;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.app-footer p {
    font-size: 0.9rem;
}

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

.auth-box {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.app-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.auth-tabs {
    display: flex;
    margin-bottom: 30px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 4px;
}

.tab-btn {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.tab-btn.active {
    background: var(--bg-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

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

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

.btn {
    padding: 14px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    width: 100%;
}

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

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

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

/* Chat Styles */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Sidebar layout */
.chat-body {
    display: flex;
    min-height: 0;
    flex: 1;
}

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

.conversation-header {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.conversation-list {
    list-style: none;
    padding: 0;
    margin: 0;
    overflow: auto;
    flex: 1;
}

.conversation-item {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.conversation-item.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-left: 3px solid var(--accent-primary);
}

.conversation-item-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.chat-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

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

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    display: flex;
    max-width: 80%;
    animation: messageSlide 0.3s ease-out;
}

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

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

.ai-message {
    align-self: flex-start;
}

.message-content {
    background: var(--bg-secondary);
    padding: 16px 20px;
    border-radius: 18px;
    border: 1px solid var(--border-color);
    position: relative;
}

.user-message .message-content {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border: none;
}

.ai-message .message-content {
    background: var(--bg-tertiary);
}

.message-content p {
    margin: 0;
    line-height: 1.5;
}

.chat-input-container {
    padding: 20px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.chat-form {
    display: flex;
    gap: 12px;
    max-width: 100%;
}

#messageInput {
    flex: 1;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

#messageInput:focus {
    outline: none;
    border-color: var(--accent-primary);
}

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

.chat-form .btn-primary {
    width: auto;
    padding: 14px 24px;
    border-radius: 25px;
}

/* Loading Animation */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border-radius: 18px;
    border: 1px solid var(--border-color);
    max-width: 80px;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .auth-box {
        padding: 30px 20px;
    }
    
    .chat-header {
        padding: 15px;
    }
    
    .chat-messages {
        padding: 15px;
    }
    
    .chat-input-container {
        padding: 15px;
    }
    
    .message {
        max-width: 90%;
    }
    
    .user-info {
        flex-direction: column;
        gap: 10px;
        align-items: flex-end;
    }

    /* Mobile sidebar behavior */
    .mobile-only { display: inline-block !important; }
    .chat-body { position: relative; }
    .chat-sidebar {
        position: fixed;
        top: 64px; /* approximate header height */
        left: 0;
        bottom: 0;
        width: 80%;
        max-width: 320px;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        z-index: 1000;
        box-shadow: var(--shadow-lg);
    }
    .chat-sidebar.open { transform: translateX(0); }
    .sidebar-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.45);
        z-index: 999;
    }
}

/* Voice Chat Styles */
.voice-icon {
    font-size: 1.2rem;
}

.voice-status {
    margin-top: 8px;
    text-align: center;
    color: var(--accent-primary);
    font-size: 0.9rem;
}

.voice-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.voice-btn-listening {
    background: var(--accent-primary) !important;
    color: white !important;
    animation: pulse 1s infinite;
}

.voice-btn-error {
    background: #ff4444 !important;
    color: white !important;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

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

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

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