/* ========================================
   Maya Academic Assistant - Styles
   Theme: Modern Blue-White (Arı Bilgi)
   ======================================== */

:root {
    /* Color Palette - Blue-White */
    --color-primary: #2ea5d6;
    --color-primary-dark: #1e8fc0;
    --color-primary-light: #5bbde8;
    
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f5f9fc;
    --color-bg-tertiary: #e8f4f8;
    --color-bg-chat: #f0f4f8;
    
    --color-text-primary: #1a2b3c;
    --color-text-secondary: #5a6b7c;
    --color-text-muted: #8a9bac;
    
    --color-maya-bubble: #2ea5d6;
    --color-user-bubble: #e8f4f8;
    --color-border: #d0e0e8;
    
    /* Typography */
    --font-heading: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(46, 165, 214, 0.1);
    --shadow-md: 0 4px 16px rgba(46, 165, 214, 0.15);
    --shadow-lg: 0 8px 32px rgba(46, 165, 214, 0.2);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, #e8f4f8 0%, #ffffff 100%);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow: hidden;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-bg-primary);
    box-shadow: var(--shadow-lg);
}

/* Header */
.chat-header {
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: var(--space-md) var(--space-lg);
    color: white;
}

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

.maya-identity {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.avatar-container {
    width: 72px;
    height: 72px;
    flex-shrink: 0;
}

.maya-avatar {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-full);
    object-fit: contain;
    border: 3px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    background: white;
}

.maya-info {
    display: flex;
    flex-direction: column;
}

.maya-name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.maya-title {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 400;
}

.institution-badge {
    padding: var(--space-xs) var(--space-md);
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    backdrop-filter: blur(4px);
}

/* Chat Container */
.chat-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--space-lg);
    background: var(--color-bg-chat);
}

.messages-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding-bottom: var(--space-md);
}

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

.chat-container::-webkit-scrollbar-track {
    background: transparent;
}

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

.chat-container::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-light);
}

/* Messages */
.message {
    display: flex;
    gap: var(--space-sm);
    max-width: 80%;
    animation: messageSlideIn var(--transition-normal) ease-out;
}

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

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

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

.message-avatar {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    padding: 2px;
    box-shadow: 0 2px 8px rgba(46, 165, 214, 0.3);
}

.message-avatar img {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-full);
    object-fit: contain;
    border: 2px solid #2ea5d6;
    background: white;
}

.user-message .message-avatar {
    display: none;
}

.message-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.message-bubble {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    line-height: 1.6;
    box-shadow: var(--shadow-sm);
}

.maya-message .message-bubble {
    background: var(--color-maya-bubble);
    color: white;
    border-bottom-left-radius: var(--radius-sm);
}

.user-message .message-bubble {
    background: white;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-bottom-right-radius: var(--radius-sm);
}

.message-bubble p {
    margin-bottom: var(--space-sm);
}

.message-bubble p:last-child {
    margin-bottom: 0;
}

/* Typing Indicator */
.typing-indicator {
    padding: 0 var(--space-lg);
}

.typing .typing-text {
    color: rgba(255, 255, 255, 0.9);
    font-style: italic;
    font-size: 0.9rem;
}

.typing-dots {
    display: inline-flex;
    gap: 4px;
    margin-left: var(--space-sm);
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-full);
    animation: typingBounce 1.4s ease-in-out infinite;
}

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

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

@keyframes typingBounce {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.5;
    }
    30% {
        transform: translateY(-6px);
        opacity: 1;
    }
}

/* Input Area */
.chat-input-area {
    flex-shrink: 0;
    padding: var(--space-md) var(--space-lg) var(--space-lg);
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
}

.input-container {
    display: flex;
    align-items: flex-end;
    gap: var(--space-sm);
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-container:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(46, 165, 214, 0.15);
}

.message-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.5;
    resize: none;
    padding: var(--space-sm) var(--space-md);
    max-height: 120px;
    overflow-y: auto;
}

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

.send-button {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.send-button:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(46, 165, 214, 0.4);
}

.send-button:active:not(:disabled) {
    transform: scale(0.98);
}

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

.input-hint {
    margin-top: var(--space-sm);
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Image Upload */
.image-button {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-right: var(--space-sm);
}

.image-button:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.image-preview-container {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.image-preview-container img {
    max-width: 100px;
    max-height: 80px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    border: 2px solid var(--color-border);
}

.remove-image-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ff4d4d;
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.remove-image-btn:hover {
    background: #ff3333;
    transform: scale(1.1);
}

/* Message Image */
.message-image {
    margin-bottom: var(--space-sm);
}

.message-image img {
    max-width: 250px;
    max-height: 200px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: transform var(--transition-fast);
    object-fit: cover;
}

.message-image img:hover {
    transform: scale(1.02);
}

.user-message .message-image img {
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.message-text p:first-child {
    margin-top: 0;
}

/* Image Modal */
.image-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: color var(--transition-fast);
    z-index: 10001;
}

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

.modal-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    animation: modalZoom 0.3s ease;
}

@keyframes modalZoom {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        max-width: 100%;
    }
    
    .chat-header {
        padding: var(--space-md);
    }
    
    .maya-name {
        font-size: 1.25rem;
    }
    
    .institution-badge {
        display: none;
    }
    
    .chat-container {
        padding: var(--space-md);
    }
    
    .message {
        max-width: 90%;
    }
    
    .chat-input-area {
        padding: var(--space-md);
    }
}

/* Error State */
.error-message {
    background: #fee2e2 !important;
    color: #dc2626 !important;
    border: 1px solid #fecaca !important;
}

/* List Styling in Messages */
.message-bubble ul,
.message-bubble ol {
    margin: var(--space-sm) 0;
    padding-left: var(--space-lg);
}

.message-bubble li {
    margin-bottom: var(--space-xs);
}

.maya-message .message-bubble strong {
    color: rgba(255, 255, 255, 0.95);
    font-weight: 600;
}

.user-message .message-bubble strong {
    color: var(--color-primary-dark);
    font-weight: 600;
}

/* Code in Messages */
.message-bubble code {
    background: rgba(0, 0, 0, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.875em;
}