/* Import Professional Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Professional Color Scheme */
:root {
    /* Light Theme - Professional */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(255, 255, 255, 0.95);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;
    --border-primary: #e2e8f0;
    --border-secondary: #cbd5e1;
    --accent-primary: #3b82f6;
    --accent-secondary: #2563eb;
    --accent-tertiary: #eff6ff;
    --accent-light: rgba(59, 130, 246, 0.1);
    --success: #10b981;
    --success-bg: #ecfdf5;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.3);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Dark Theme - Professional */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;
    --bg-overlay: rgba(15, 23, 42, 0.95);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-inverse: #0f172a;
    --border-primary: #334155;
    --border-secondary: #475569;
    --accent-primary: #60a5fa;
    --accent-secondary: #3b82f6;
    --accent-tertiary: #1e3a8a;
    --accent-light: rgba(96, 165, 250, 0.15);
    --success: #34d399;
    --success-bg: #064e3b;
    --warning: #fbbf24;
    --warning-bg: #451a03;
    --danger: #f87171;
    --danger-bg: #7f1d1d;
    --glass-bg: rgba(30, 41, 59, 0.85);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: all 0.3s ease;
    overflow-x: hidden;
}

/* Perfect Login Page Layout */
.auth-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    overflow: hidden;
}

[data-theme="dark"] .auth-overlay {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.login-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    top: -5%;
    left: -5%;
    animation-delay: 0s;
}

.orb-2 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    top: 60%;
    right: -5%;
    animation-delay: 3s;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    bottom: -5%;
    left: 50%;
    animation-delay: 6s;
}

/* Main Container - Perfect Width */
.auth-main-container {
    width: 100%;
    max-width: 900px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 0;
    margin: 0 auto;
}

/* College Header - Just Like Reference */
.college-header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 2rem;
    text-align: center;
}

.college-logo-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.college-main-logo {
    font-size: 4rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.college-info {
    text-align: center;
}

.college-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.college-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Login Section - Perfect Layout */
.login-section {
    flex: 1;
    display: flex;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
}

/* Login Container - Left Side */
.login-container {
    flex: 1;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-right: 1px solid var(--border-primary);
}

.login-form-header {
    margin-bottom: 2rem;
    text-align: center;
}

.login-form-header h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.login-form-header p {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Form Styles - Clean and Professional */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 400px;
    margin: 0 auto;
    width: 100%;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input {
    height: 48px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    padding: 0 1rem;
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-light);
}

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

/* Password Input with Toggle */
.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper input {
    padding-right: 3rem;
}

.password-toggle {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: color 0.2s ease;
    padding: 0.5rem;
    border-radius: 4px;
}

.password-toggle:hover {
    color: var(--accent-primary);
    background: var(--accent-light);
}

/* Form Options */
.form-options {
    display: flex;
    align-items: center;
    margin: 0.5rem 0;
}

.remember-checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.remember-checkbox:hover {
    color: var(--text-primary);
}

.remember-checkbox input[type="checkbox"] {
    display: none;
}

.checkbox-mark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-primary);
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
    background: var(--bg-elevated);
}

.remember-checkbox input:checked + .checkbox-mark {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

.remember-checkbox input:checked + .checkbox-mark::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 1px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Continue Button - Main CTA */
.continue-btn {
    width: 100%;
    height: 48px;
    background: var(--accent-primary);
    color: var(--text-inverse);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    font-family: inherit;
    box-shadow: var(--shadow-sm);
}

.continue-btn:hover {
    background: var(--accent-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.continue-btn:active {
    transform: translateY(0);
}

.continue-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

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

/* Login Divider */
.login-divider {
    display: flex;
    align-items: center;
    margin: 1rem 0;
    text-align: center;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-primary);
}

.login-divider span {
    padding: 0 1rem;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Demo Access Button */
.demo-access-btn {
    width: 100%;
    height: 44px;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: inherit;
}

.demo-access-btn:hover {
    background: var(--accent-light);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-1px);
}

/* Login Help */
.login-help {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-primary);
}

.login-help p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.help-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
    font-size: 0.9rem;
}

.help-link:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

/* Features Section - Right Side */
.features-section {
    flex: 1;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    border-radius: 8px;
}

.feature-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.feature-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Main App Styles */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: 1400px;
    margin: 0 auto;
}

/* Header */
.main-header {
    background: var(--bg-elevated);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

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

.brand-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.college-logo {
    font-size: 1.8rem;
}

.brand-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    letter-spacing: -0.02em;
}

.brand-text .subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 25px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: var(--accent-light);
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

.moon-icon {
    position: absolute;
    opacity: 0;
    transition: opacity 0.3s ease;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 1;
}

/* Status and User Info */
.status-section, .user-info-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.status-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-weight: 600;
    font-size: 0.875rem;
}

.user-details h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.user-details p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin: 0;
}

.logout-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.logout-btn:hover {
    background: var(--danger-bg);
    border-color: var(--danger);
    color: var(--danger);
}

/* Chat Interface */
.chat-interface {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 2rem;
}

.chat-container {
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    flex: 1;
}

.welcome-section {
    text-align: center;
    padding: 2rem 0;
}

.welcome-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.welcome-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 400;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.capability-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.capability-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.capability-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.capability-text h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.capability-text p {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    line-height: 1.4;
}

/* Messages Area */
.messages-area {
    flex: 1;
    min-height: 300px;
    max-height: 500px;
    overflow-y: auto;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    margin-bottom: 1rem;
}

.ai-message, .user-message {
    margin-bottom: 1.5rem;
}

.message-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.ai-avatar {
    background: var(--accent-primary);
    color: var(--text-inverse);
}

.user-avatar {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--border-primary);
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

.message-content {
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    padding: 1.25rem;
    margin-left: 2.5rem;
    box-shadow: var(--shadow-sm);
}

.user-message .message-content {
    background: var(--accent-light);
    border-color: var(--accent-primary);
    margin-left: 0;
    margin-right: 2.5rem;
}

.message-content p {
    margin-bottom: 0.75rem;
}

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

.message-hint {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    font-style: italic;
}

.typing-indicator {
    margin-bottom: 1.5rem;
}

.typing-animation {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    padding: 1rem;
    margin-left: 2.5rem;
    box-shadow: var(--shadow-sm);
}

.typing-dots {
    display: flex;
    gap: 0.25rem;
}

.typing-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-primary);
    animation: typing 1.4s infinite;
}

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

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

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

.input-section {
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: 20px;
    padding: 1.25rem;
    box-shadow: var(--shadow-md);
}

.input-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-primary);
    border-radius: 16px;
    padding: 0.75rem;
    transition: all 0.3s ease;
}

.input-wrapper:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--accent-light);
}

#userInput {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    resize: none;
    font-family: inherit;
    font-size: 0.875rem;
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 20px;
    max-height: 120px;
}

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

.input-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.char-count {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.send-button {
    background: var(--accent-primary);
    border: none;
    border-radius: 12px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-inverse);
    font-size: 1.2rem;
    box-shadow: var(--shadow-sm);
}

.send-button:hover {
    background: var(--accent-secondary);
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

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

.input-suggestions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.suggestion-chip {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 20px;
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.suggestion-chip:hover {
    background: var(--accent-light);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-1px);
}

/* Document Modal */
.document-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-container {
    background: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: 20px;
    width: 100%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
}

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

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    font-size: 1.2rem;
}

.modal-close:hover {
    background: var(--danger-bg);
    color: var(--danger);
}

.modal-body {
    padding: 1.5rem;
    max-height: 400px;
    overflow-y: auto;
}

/* Footer */
.app-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    padding: 1.5rem 2rem;
    margin-top: auto;
}

.footer-content {
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}

.powered-by {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-10px) rotate(1deg);
    }
    66% {
        transform: translateY(5px) rotate(-1deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1.2);
        opacity: 1;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

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

/* Responsive Design - Mobile Optimization */
@media (max-width: 1024px) {
    .login-section {
        flex-direction: column;
    }
    
    .login-container,
    .features-section {
        border-right: none;
        border-bottom: 1px solid var(--border-primary);
        padding: 2rem;
    }
    
    .college-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .auth-main-container {
        max-width: 100%;
    }
    
    .college-header {
        padding: 1.5rem;
    }
    
    .college-main-logo {
        font-size: 3rem;
    }
    
    .college-title {
        font-size: 1.5rem;
    }
    
    .college-subtitle {
        font-size: 1rem;
    }
    
    .login-container,
    .features-section {
        padding: 1.5rem;
    }
    
    .features-section {
        gap: 1rem;
    }
    
    .feature-item {
        padding: 1rem;
    }
    
    .main-header {
        padding: 1rem;
    }
    
    .header-content {
        flex-wrap: wrap;
        gap: 1rem;
        justify-content: center;
    }
    
    .chat-interface {
        padding: 1rem;
    }
    
    .welcome-header h2 {
        font-size: 1.5rem;
    }
    
    .capabilities-grid {
        grid-template-columns: 1fr;
    }
    
    .capability-card {
        padding: 1rem;
    }
    
    .message-content {
        margin-left: 0;
    }
    
    .user-message .message-content {
        margin-right: 0;
    }
    
    .typing-animation {
        margin-left: 0;
    }
}

@media (max-width: 480px) {
    .college-header {
        padding: 1rem;
    }
    
    .login-container,
    .features-section {
        padding: 1rem;
    }
}

/* Custom Scrollbar */
.messages-area::-webkit-scrollbar,
.modal-body::-webkit-scrollbar {
    width: 6px;
}

.messages-area::-webkit-scrollbar-track,
.modal-body::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.messages-area::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb {
    background: var(--border-secondary);
    border-radius: 3px;
    transition: background 0.2s ease;
}

.messages-area::-webkit-scrollbar-thumb:hover,
.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Focus Styles for Accessibility */
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}