/* ===================================
   Student Habit Tracker - Main Styles
   =================================== */

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

/* CSS Variables */
:root {
    --primary-color: #4e73df;
    --primary-light: #6b8df5;
    --primary-dark: #3a5cb5;
    --secondary-color: #9b59b6;
    --success-color: #1cc88a;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
    --info-color: #36b9cc;
    
    --bg-primary: #f8f9fc;
    --bg-white: #ffffff;
    --bg-dark: #1a1a2e;
    --bg-darker: #16213e;
    
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --text-muted: #a0aec0;
    --text-dark: #e2e8f0;
    
    --border-color: #e2e8f0;
    --border-dark: #2d3748;
    
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.15);
    
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    --transition: all 0.3s ease;
    
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-success: linear-gradient(135deg, var(--success-color), #2ecc71);
    --gradient-warning: linear-gradient(135deg, var(--warning-color), #e67e22);
}

/* Theme: Blue Dream */
[data-theme="blue"] {
    --primary-color: #4e73df;
    --primary-light: #6b8df5;
    --primary-dark: #3a5cb5;
    --secondary-color: #9b59b6;
}

/* Theme: Emerald */
[data-theme="emerald"] {
    --primary-color: #1cc88a;
    --primary-light: #2ecc71;
    --primary-dark: #16a085;
    --secondary-color: #3498db;
}

/* Theme: Sunset */
[data-theme="sunset"] {
    --primary-color: #e74a3b;
    --primary-light: #ff6b6b;
    --primary-dark: #c0392b;
    --secondary-color: #f39c12;
}

/* Theme: Ocean */
[data-theme="ocean"] {
    --primary-color: #36b9cc;
    --primary-light: #4ecdc4;
    --primary-dark: #2980b9;
    --secondary-color: #9b59b6;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Dark Mode Styles */
body.dark-mode {
    --bg-primary: #1a1a2e;
    --bg-white: #16213e;
    --text-primary: #e2e8f0;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    --border-color: #2d3748;
}

body.dark-mode .navbar {
    background-color: var(--bg-white) !important;
}

body.dark-mode .card {
    background-color: var(--bg-white);
    border-color: var(--border-color);
}

body.dark-mode .list-group-item {
    background-color: var(--bg-white);
    border-color: var(--border-color);
}

body.dark-mode .modal-content {
    background-color: var(--bg-white);
}

body.dark-mode .form-control,
body.dark-mode .form-select {
    background-color: var(--bg-white);
    border-color: var(--border-color);
    color: var(--text-primary);
}

body.dark-mode .table {
    color: var(--text-primary);
}

body.dark-mode .bg-light {
    background-color: var(--bg-darker) !important;
}

body.dark-mode .text-muted {
    color: var(--text-muted) !important;
}

/* Navbar Styles */
.navbar {
    background: var(--bg-white);
    transition: var(--transition);
}

.navbar-brand {
    color: var(--primary-color) !important;
    font-weight: 700;
    font-size: 1.25rem;
}

.navbar-brand:hover {
    color: var(--primary-dark) !important;
}

.nav-link {
    color: var(--text-primary) !important;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.75rem 1rem !important;
    border-radius: var(--radius-md);
}

.nav-link:hover {
    color: var(--primary-color) !important;
    background-color: rgba(78, 115, 223, 0.1);
}

.nav-link.active {
    color: var(--primary-color) !important;
    background-color: rgba(78, 115, 223, 0.1);
}

/* Dark Mode Toggle */
.form-check-input {
    width: 3rem;
    height: 1.5rem;
    cursor: pointer;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Card Styles */
.card {
    border-radius: var(--radius-lg);
    border: none;
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    padding: 1.25rem 1.5rem;
}

.card-body {
    padding: 1.5rem;
}

/* Button Styles */
.btn {
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    color: white;
}

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

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

.btn-success {
    background: var(--gradient-success);
    border: none;
    color: white;
}

.btn-warning {
    background: var(--gradient-warning);
    border: none;
    color: white;
}

/* Progress Bar */
.progress {
    border-radius: var(--radius-xl);
    background-color: rgba(78, 115, 223, 0.1);
}

.progress-bar {
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    font-weight: 600;
}

/* Habit Item Styles */
.habit-item {
    padding: 1rem 1.5rem;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
    cursor: pointer;
}

.habit-item:hover {
    background-color: rgba(78, 115, 223, 0.05);
}

.habit-item.completed {
    opacity: 0.7;
    border-left-color: var(--success-color);
}

.habit-item.completed .habit-name {
    text-decoration: line-through;
}

.habit-icon {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.habit-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

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

.habit-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
}

.category-belajar { background: rgba(78, 115, 223, 0.1); color: #4e73df; }
.category-olahraga { background: rgba(28, 200, 138, 0.1); color: #1cc88a; }
.category-membaca { background: rgba(155, 89, 182, 0.1); color: #9b59b6; }
.category-tugas { background: rgba(246, 194, 62, 0.1); color: #d4a006; }
.category-pengembangan { background: rgba(54, 185, 204, 0.1); color: #36b9cc; }

/* Streak Badge */
.streak-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #ff6b6b, #ff8e53);
    color: white;
    font-weight: 600;
}

/* XP Bar */
.xp-container {
    margin-top: 1rem;
}

.xp-bar {
    height: 8px;
    border-radius: var(--radius-xl);
    background: rgba(78, 115, 223, 0.2);
    overflow: hidden;
}

.xp-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    transition: width 0.5s ease;
}

/* Badge Styles */
.badge-custom {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Focus Mode Styles */
.focus-mode {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.focus-timer {
    font-size: 8rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.focus-label {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.focus-controls {
    display: flex;
    gap: 1rem;
}

.focus-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.focus-btn:hover {
    transform: scale(1.1);
}

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

.focus-btn-pause {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.focus-btn-reset {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* Calendar Styles */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.calendar-day:hover {
    background: rgba(78, 115, 223, 0.1);
}

.calendar-day.today {
    background: var(--gradient-primary);
    color: white;
}

.calendar-day.has-tasks {
    position: relative;
}

.calendar-day.has-tasks::after {
    content: '';
    position: absolute;
    bottom: 4px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success-color);
}

.calendar-day.productive {
    background: rgba(28, 200, 138, 0.2);
}

.calendar-day.selected {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 300px;
}

/* Input Styles */
.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

/* Modal Styles */
.modal-content {
    border-radius: var(--radius-lg);
    border: none;
}

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

.modal-footer {
    border-top: 1px solid var(--border-color);
}

/* Toast Notification */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1060;
}

.custom-toast {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Drag & Drop Styles */
.sortable-ghost {
    opacity: 0.4;
    background: var(--primary-color);
}

.sortable-chosen {
    box-shadow: var(--shadow-lg);
}

.sortable-drag {
    opacity: 1 !important;
}

/* Quote Section */
.quote-section {
    background: var(--gradient-primary);
    color: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
}

/* Stat Card */
.stat-card {
    text-align: center;
    padding: 1.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

/* Responsive Adjustments */
@media (max-width: 768px) {
    .focus-timer {
        font-size: 4rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .habit-item {
        padding: 0.75rem 1rem;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.3s ease;
}

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

/* Loading Spinner */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Search Highlight */
.search-highlight {
    background: rgba(246, 194, 62, 0.3);
    padding: 0.125rem 0.25rem;
    border-radius: 2px;
}

/* Utility Classes */
.gap-1 { gap: 0.25rem !important; }
.gap-2 { gap: 0.5rem !important; }
.gap-3 { gap: 1rem !important; }
.gap-4 { gap: 1.5rem !important; }

/* Theme Selector */
.theme-selector {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.theme-option {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid transparent;
    transition: var(--transition);
}

.theme-option:hover {
    transform: scale(1.1);
}

.theme-option.active {
    border-color: var(--text-primary);
}

/* Sound Toggle */
.sound-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

/* Footer */
footer {
    margin-top: auto;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Pomodoro Settings */
.pomodoro-settings {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.setting-btn {
    padding: 0.5rem 1.5rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: transparent;
    color: white;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition);
}

.setting-btn:hover,
.setting-btn.active {
    background: rgba(255, 255, 255, 0.2);
    border-color: white;
}