/* Main Stylesheet - WorkoutLogger */

:root {
    /* Athletic Color Palette */
    --primary: #0C4A6E; /* Deep ocean blue */
    --primary-light: #0369A1;
    --primary-dark: #082F49;
    
    --accent: #F97316; /* Energetic orange */
    --accent-light: #FB923C;
    
    --success: #059669; /* Fresh green */
    --warning: #D97706;
    --danger: #DC2626;
    
    --bg: #F8FAFC;
    --surface: #FFFFFF;
    --border: #E2E8F0;
    --text: #1E293B;
    --text-light: #64748B;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-accent:hover {
    background: var(--accent-light);
    transform: translateY(-1px);
}

.btn-outline {
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

/* Cards */
.card {
    background: var(--surface);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all 0.2s;
}

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

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
    font-size: 0.875rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 2px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.2s;
    background: white;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(12, 74, 110, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* Activity Badge */
.activity-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--bg);
    border: 2px solid currentColor;
}

/* Stats Cards */
.stat-card {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    font-weight: 500;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-top: 0.25rem;
}

/* Calendar Styling */
.calendar-grid {
    display: grid;
    gap: 1rem;
}

.calendar-day {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: 0.75rem;
    padding: 1rem;
    min-height: 120px;
    transition: all 0.2s;
}

.calendar-day:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.calendar-day-header {
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.calendar-day.today {
    border-color: var(--accent);
    background: linear-gradient(to bottom right, rgba(249, 115, 22, 0.05), transparent);
}

.workout-item {
    background: var(--bg);
    padding: 0.5rem;
    margin: 0.25rem 0;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: slideIn 0.3s ease-out;
}

/* Utility Classes */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

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

.text-center { text-align: center; }
.text-muted { color: var(--text-light); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 2rem; }

.gap-2 { gap: 1rem; }
.gap-4 { gap: 2rem; }

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    
    .calendar-day {
        min-height: 100px;
        padding: 0.75rem;
    }
}