/*
 * FitTrack - Main Stylesheet
 * * Description: All styles for the FitTrack Fitness Dashboard. This file handles
 * the layout, color themes (dark/light), and component styling.
 * * Hackathon: CodeSprout Hackathon - August 2025
 * * Authors / Team:
 * - Aran
 * - Raheem
 * - Hashim
 * - Arif
 */

/* ===============================================
   1. FONT & ROOT VARIABLES (LIGHT MODE DEFAULT)
   Author: Hashim
   =============================================== */
:root {
    --font-sans: 'Inter', sans-serif;

    /* Light Theme Colors */
    --color-bg: #f1f5f9; /* slate-100 */
    --color-bg-secondary: #ffffff; /* white */
    --color-text: #0f172a; /* slate-900 */
    --color-text-secondary: #64748b; /* slate-500 */
    --color-border: #e2e8f0; /* slate-200 */

    --color-primary: #3b82f6; /* blue-500 */
    --color-primary-hover: #2563eb; /* blue-600 */
    --color-success: #22c55e; /* green-500 */
    --color-success-hover: #16a34a; /* green-600 */
    --color-danger: #ef4444; /* red-500 */
    --color-secondary: #64748b; /* slate-500 */
    --color-secondary-hover: #475569; /* slate-600 */
}

/* ===============================================
   2. DARK MODE OVERRIDES
   Author: Hashim
   =============================================== */
html.dark {
    /* Dark Theme Colors */
    --color-bg: #111827; /* gray-900 */
    --color-bg-secondary: #1f2937; /* gray-800 */
    --color-text: #f3f4f6; /* gray-100 */
    --color-text-secondary: #9ca3af; /* gray-400 */
    --color-border: #374151; /* gray-700 */
}


/* ===============================================
   3. GLOBAL STYLES
   Author: The Team
   =============================================== */
body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    transition: background-color 0.3s, color 0.3s;
}

.view-container, .page-content {
    display: none;
}
.view-container.active, .page-content.active {
    display: block;
}
#login-container.active {
    display: flex;
}
#app-container.active {
    display: block;
}


/* ===============================================
   4. COMPONENT STYLES
   Author: Arif
   =============================================== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    border: 1px solid transparent;
    transition: all 0.2s ease-in-out;
    cursor: pointer;
}
.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}
.btn-primary { background-color: var(--color-primary); color: white; }
.btn-primary:hover { background-color: var(--color-primary-hover); }
.btn-success { background-color: var(--color-success); color: white; }
.btn-success:hover { background-color: var(--color-success-hover); }
.btn-secondary { background-color: var(--color-secondary); color: white; }
.btn-secondary:hover { background-color: var(--color-secondary-hover); }

.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    transition: all 0.2s ease-in-out;
    border: none;
}
.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 10px -2px rgba(0, 0, 0, 0.1), 0 3px 6px -2px rgba(0, 0, 0, 0.06);
}
.primary-btn { background-color: #4f46e5; color: white; } /* indigo-600 */
.secondary-btn { background-color: #374151; color: white; } /* gray-700 */


/* Form Inputs */
.form-input {
    width: 100%;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    padding: 0.5rem 0.75rem;
    color: var(--color-text);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary);
}
.dark .form-input {
    background-color: var(--color-bg-secondary);
}

/* Cards & Containers */
.card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.content-box {
    background-color: var(--color-bg-secondary);
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}


/* ===============================================
   5. NAVIGATION STYLES
   Author: Hashim
   =============================================== */
.main-nav {
    background-color: #1f2937; /* gray-800 */
    border-bottom: 1px solid #374151; /* gray-700 */
}
.nav-link {
    color: #d1d5db; /* gray-300 */
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease-in-out;
    position: relative;
}
.nav-link:hover {
    background-color: #374151; /* gray-700 */
    color: white;
}
.nav-link.active {
    color: white;
    background-color: #4f46e5; /* indigo-600 */
}
.theme-toggle-btn {
    background-color: #374151;
    color: #9ca3af;
    border-radius: 9999px;
    padding: 0.5rem;
    transition: all 0.2s ease-in-out;
}
.theme-toggle-btn:hover {
    background-color: #4b5563;
    color: white;
}

/* ===============================================
   6. DASHBOARD STYLES
   Author: Hashim
   =============================================== */
.welcome-title {
    font-size: 2.5rem; /* 40px */
    font-weight: 800; /* extrabold */
    margin-bottom: 2rem;
    background: -webkit-linear-gradient(45deg, #a5b4fc, #f9a8d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-card {
    background-color: var(--color-bg-secondary);
    border-radius: 1rem;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out;
    border: 1px solid var(--color-border);
}
.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}
.stat-card .stat-title {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}
.stat-card .stat-value {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-text);
}
.stat-card .stat-icon {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 1.75rem;
    opacity: 0.2;
}

/* Card Specific Colors */
.calories-card { background: linear-gradient(135deg, #ef4444, #f87171); color: white; }
.workouts-card { background: linear-gradient(135deg, #f97316, #fb923c); color: white; }
.steps-card { background: linear-gradient(135deg, #22c55e, #4ade80); color: white; }
.water-card { background: linear-gradient(135deg, #3b82f6, #60a5fa); color: white; }
.workout-total-card { background: linear-gradient(135deg, #8b5cf6, #a78bfa); color: white; }
.workout-time-card { background: linear-gradient(135deg, #ec4899, #f472b6); color: white; }
.workout-cals-card { background: linear-gradient(135deg, #f59e0b, #fbbf24); color: white; }

.stat-card.calories-card .stat-title, .stat-card.workouts-card .stat-title, .stat-card.steps-card .stat-title, .stat-card.water-card .stat-title,
.stat-card.workout-total-card .stat-title, .stat-card.workout-time-card .stat-title, .stat-card.workout-cals-card .stat-title { color: rgba(255,255,255,0.8); }
.stat-card.calories-card .stat-value, .stat-card.workouts-card .stat-value, .stat-card.steps-card .stat-value, .stat-card.water-card .stat-value,
.stat-card.workout-total-card .stat-value, .stat-card.workout-time-card .stat-value, .stat-card.workout-cals-card .stat-value { color: white; }

/* Quick Action Buttons */
.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    border-radius: 1rem;
    font-weight: 600;
    transition: all 0.2s ease-in-out;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-secondary);
}
.quick-action-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}
.quick-action-btn i {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}
.workout-btn { color: #f97316; }
.meal-btn { color: #ef4444; }
.water-btn { color: #3b82f6; }
.steps-btn { color: #22c55e; }

/* Quote Card */
.quote-card {
    background-color: var(--color-bg-secondary);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    position: relative;
    border: 1px solid var(--color-border);
    margin-top: 2rem;
}
.quote-card .quote-icon {
    font-size: 2rem;
    color: var(--color-primary);
    opacity: 0.5;
    margin-bottom: 1rem;
}
.quote-card p {
    color: var(--color-text-secondary);
    font-size: 1.125rem; /* text-lg */
    line-height: 1.75;
}


/* ===============================================
   7. TABLE STYLES
   Author: Raheem
   =============================================== */
table {
    width: 100%;
    border-collapse: collapse;
}
table thead th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    border-bottom: 2px solid var(--color-border);
}
table tbody td {
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}
table tbody tr:hover {
    background-color: var(--color-bg);
}

/* ===============================================
   8. MODAL STYLES
   Author: Arif
   =============================================== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 50;
    background-color: rgba(0, 0, 0, 0.5);
    display: none; /* Managed by JS */
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease-out;
}
.modal-backdrop .card {
    width: 100%;
    max-width: 500px;
    animation: slideUp 0.4s ease-out;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
}
.modal-close-btn {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: color 0.2s;
}
.modal-close-btn:hover {
    color: var(--color-text);
}

/* ===============================================
   9. Custom Workout Plan Styles
   Author: Arif
   =============================================== */
.plan-card {
    background-color: var(--color-bg-secondary);
    padding: 1.5rem;
    border-radius: 1rem;
    border-left: 4px solid var(--color-success);
    transition: all 0.2s ease-in-out;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
}
.plan-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
}

/* ===============================================
   10. PROGRESS PAGE STYLES
   Author: Raheem
   =============================================== */
.progress-card-weight {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
    color: white;
}
.progress-card-bodyfat {
    background: linear-gradient(135deg, #ec4899, #f472b6);
    color: white;
}
.progress-card-weight h3, .progress-card-bodyfat h3 {
    color: white;
}
.chart-container {
    height: 300px;
    padding: 1rem;
    background: rgba(0,0,0,0.1);
    border-radius: 0.75rem;
}
.log-input-group {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}
.log-input-group .form-input {
    background-color: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
    color: white;
}
.log-input-group .form-input::placeholder {
    color: rgba(255,255,255,0.5);
}
.log-input-group .action-btn {
    flex-shrink: 0;
}

/* ===============================================
   11. NUTRITION PAGE STYLES
   Author: Raheem
   =============================================== */
#meal-list {
    list-style: none;
    padding: 0;
}
.meal-item {
    background-color: var(--color-bg-secondary);
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--color-border);
    transition: all 0.2s ease-in-out;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.meal-item:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}
.meal-item .meal-details p:first-child {
    font-weight: 600;
    color: var(--color-text);
}
.meal-item .meal-details p:last-child {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}
.meal-item .meal-macros {
    text-align: right;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}
.meal-item .meal-macros span {
    font-weight: 600;
    color: var(--color-text);
}
.nutrition-goal-card {
    background-color: var(--color-bg-secondary);
    padding: 1.5rem;
    border-radius: 1rem;
    transition: all 0.3s ease-in-out;
    border: 1px solid var(--color-border);
}
.nutrition-goal-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* ===============================================
   12. COMMUNITY PAGE STYLES
   Author: Hashim
   =============================================== */
#community-content .content-box {
    padding: 0.5rem; /* Reduced padding for a more compact look */
}

.leaderboard-tab {
    padding: 1rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease-in-out;
}
.leaderboard-tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}
.timeframe-btn {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all 0.2s ease-in-out;
}
.timeframe-btn.active {
    background-color: var(--color-primary);
    color: white;
}

/* ===============================================
   13. NOTIFICATION BANNER STYLES
   Author: Aran
   =============================================== */
.notification {
    position: fixed;
    top: -100px; /* Start off-screen */
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-success);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    z-index: 1000;
    font-weight: 500;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: top 0.5s ease-in-out;
}
.notification.show {
    top: 20px; /* Slide in */
}


/* ===============================================
   ANIMATIONS
   Author: Aran
   =============================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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