/* College Survival AI - Main Stylesheet */
:root {
    /* Dark theme colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --accent-primary: #3b82f6;
    --accent-secondary: #8b5cf6;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border-color: #475569;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

/* Light theme overrides */
.light-mode {
    --bg-primary: #f8fafc;
    --bg-secondary: #e2e8f0;
    --bg-card: #ffffff;
    --accent-primary: #2563eb;
    --accent-secondary: #7c3aed;
    --accent-success: #059669;
    --accent-warning: #d97706;
    --accent-danger: #dc2626;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --border-color: #cbd5e1;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    flex: 1;
}

/* Navigation */
.navbar {
    background-color: var(--bg-secondary);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-primary);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 20px;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
}

.nav-menu a:hover, .nav-menu a.active {
    color: var(--accent-primary);
    background-color: var(--bg-card);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Page Header */
.page-header {
    margin-bottom: 30px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
    border: 1px solid var(--border-color);
}

.calculator-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    border: 1px solid var(--border-color);
}

@media (max-width: 900px) {
    .calculator-card {
        grid-template-columns: 1fr;
    }
}

/* Input Sections */
.input-group {
    margin-bottom: 25px;
}

.input-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-primary);
}

.value-display {
    background-color: var(--bg-secondary);
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: bold;
    color: var(--accent-primary);
}

input[type="range"] {
    width: 100%;
    height: 10px;
    -webkit-appearance: none;
    background: var(--bg-secondary);
    border-radius: 5px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    border: 3px solid var(--bg-card);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--accent-secondary);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--bg-card);
    transform: translateY(-2px);
}

#calculate-btn {
    width: 100%;
    margin-top: 20px;
    justify-content: center;
}

/* Result Section */
.result-container {
    text-align: center;
}

.probability-display {
    margin-bottom: 25px;
}

.probability-label {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.probability-value {
    font-size: 4rem;
    font-weight: bold;
    color: var(--accent-primary);
    text-shadow: 0 5px 15px rgba(59, 130, 246, 0.3);
}

.progress-bar-container {
    height: 30px;
    background-color: var(--bg-secondary);
    border-radius: 15px;
    margin: 25px 0;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-danger), var(--accent-warning), var(--accent-success));
    border-radius: 15px;
    width: 0%;
    transition: width 1s ease-in-out;
}

.status-label {
    font-size: 1.8rem;
    font-weight: bold;
    margin: 20px 0;
    padding: 15px;
    border-radius: 10px;
    background-color: var(--bg-secondary);
}

.status-description {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.6;
}

.fun-fact {
    background-color: var(--bg-secondary);
    padding: 15px;
    border-radius: 10px;
    border-left: 5px solid var(--accent-warning);
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

/* Tasks Page Layout */
.tasks-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 30px;
}

@media (max-width: 1000px) {
    .tasks-layout {
        grid-template-columns: 1fr;
    }
}

.tasks-sidebar {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.tasks-main {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group select, .form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
    font-family: inherit;
}

/* Task Cards */
.task-card {
    background-color: var(--bg-secondary);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 15px;
    border-left: 5px solid var(--accent-primary);
    transition: all 0.3s;
}

.task-card.urgent {
    border-left-color: var(--accent-danger);
    animation: pulse 2s infinite;
}

.task-card.warning {
    border-left-color: var(--accent-warning);
}

.task-card.completed {
    border-left-color: var(--accent-success);
    opacity: 0.8;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.task-title {
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--text-primary);
}

.task-type {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    background-color: var(--accent-primary);
    color: white;
    margin-left: 10px;
}

.task-details {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
}

.task-detail {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.task-actions {
    display: flex;
    gap: 10px;
}

.task-actions button {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* Reminder Alerts */
.reminders-alert {
    background-color: var(--bg-secondary);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    border-left: 5px solid var(--accent-warning);
}

.reminder-item {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 15px;
}

.reminder-item:last-child {
    border-bottom: none;
}

.reminder-icon {
    font-size: 1.5rem;
}

.reminder-icon.green { color: var(--accent-success); }
.reminder-icon.yellow { color: var(--accent-warning); }
.reminder-icon.red { color: var(--accent-danger); }

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.stat-box {
    text-align: center;
    padding: 20px;
    background-color: var(--bg-secondary);
    border-radius: 10px;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--accent-primary);
}

.stat-label {
    color: var(--text-secondary);
    margin-top: 5px;
}

/* Chat Page */
.chat-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 30px;
}

@media (max-width: 1000px) {
    .chat-container {
        grid-template-columns: 1fr;
    }
}

.chat-card {
    height: 600px;
    display: flex;
    flex-direction: column;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

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

.bot-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

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

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    background-color: var(--bg-secondary);
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    display: flex;
    gap: 15px;
    max-width: 80%;
}

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

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--accent-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.message-content {
    background-color: var(--bg-card);
    padding: 15px;
    border-radius: 15px;
    border-top-left-radius: 0;
}

.user-message .message-content {
    background-color: var(--accent-primary);
    color: white;
    border-top-left-radius: 15px;
    border-top-right-radius: 0;
}

.message-text {
    line-height: 1.5;
}

.message-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 5px;
    text-align: right;
}

.user-message .message-time {
    color: rgba(255, 255, 255, 0.8);
}

.chat-input-container {
    margin-top: auto;
}

.input-wrapper {
    display: flex;
    gap: 10px;
}

#chat-input {
    flex: 1;
    padding: 15px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
}

.input-suggestions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.suggestion-btn {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s;
}

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

/* Quick Actions */
.quick-action-btn {
    width: 100%;
    padding: 12px;
    margin-bottom: 10px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s;
}

.quick-action-btn:hover {
    background-color: var(--accent-primary);
    color: white;
    transform: translateX(5px);
}

/* User Status */
.user-status {
    padding: 15px;
    background-color: var(--bg-secondary);
    border-radius: 10px;
    text-align: center;
}

.survival-score {
    margin-bottom: 15px;
}

.score-label {
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.score-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--accent-primary);
}

.task-summary p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    justify-content: center;
}

/* About Page */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin: 30px 0;
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.how-it-works {
    margin-top: 30px;
}

.step {
    display: flex;
    gap: 25px;
    margin-bottom: 30px;
    align-items: flex-start;
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--accent-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h4 {
    margin-bottom: 10px;
    color: var(--accent-primary);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
}

.tech-tag {
    background-color: var(--accent-primary);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
}

.setup-instructions {
    background-color: var(--bg-secondary);
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.setup-instructions code {
    background-color: var(--bg-primary);
    padding: 3px 8px;
    border-radius: 5px;
    font-family: monospace;
    color: var(--accent-warning);
}

.setup-instructions ol {
    margin-left: 20px;
    margin-top: 10px;
}

.setup-instructions li {
    margin-bottom: 10px;
}

/* Feature List */
.feature-list {
    list-style: none;
    margin: 15px 0;
}

.feature-list li {
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.feature-list i {
    color: var(--accent-success);
    margin-top: 3px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 25px;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    margin-top: 40px;
}

.footer-links {
    margin-top: 10px;
}

.footer-links a {
    color: var(--accent-primary);
    text-decoration: none;
    margin: 0 10px;
}

.footer-links a:hover {
    text-decoration: underline;
}

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

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-card);
    width: 90%;
    max-width: 700px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background-color: var(--accent-primary);
    color: white;
}

.close-modal {
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
}

.modal-body {
    padding: 25px;
    max-height: 500px;
    overflow-y: auto;
}

.ai-loading {
    text-align: center;
    padding: 30px;
    color: var(--text-secondary);
}

/* Task Filters */
.task-filters {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 16px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.filter-btn.active, .filter-btn:hover {
    background-color: var(--accent-primary);
    color: white;
}

/* Daily AI Output */
.daily-ai-output {
    margin-top: 20px;
    padding: 15px;
    background-color: var(--bg-secondary);
    border-radius: 10px;
    border-left: 5px solid var(--accent-primary);
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    margin-bottom: 20px;
    color: var(--border-color);
}

/* History */
.history-item {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color 0.3s;
}

.history-item:hover {
    background-color: var(--bg-secondary);
}

.history-item:last-child {
    border-bottom: none;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--bg-secondary);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hamburger {
        display: block;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .probability-value {
        font-size: 3rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}