/* Kids Routine Planner - Custom Styles */

/* ============================================
   TABLE OF CONTENTS
   1. CSS Variables & Theme
   2. Tailwind Extensions
   3. Component Styles
   4. Animations
   5. Responsive Utilities
   6. Accessibility Enhancements
   ============================================ */

/* ============================================
   1. CSS VARIABLES & THEME
   ============================================ */
:root {
    /* Brand Colors */
    --color-primary: #2563eb;        /* blue-600 */
    --color-primary-hover: #1d4ed8;  /* blue-700 */
    --color-secondary: #10b981;      /* green-500 */
    --color-secondary-hover: #059669; /* green-600 */
    --color-accent: #8b5cf6;         /* purple-500 */
    --color-accent-hover: #7c3aed;   /* purple-600 */
    
    /* Semantic Colors */
    --color-success: #10b981;        /* green-500 */
    --color-warning: #f59e0b;        /* amber-500 */
    --color-danger: #ef4444;         /* red-500 */
    --color-info: #3b82f6;           /* blue-500 */
    
    /* Neutral Colors */
    --color-background: #f9fafb;     /* gray-50 */
    --color-surface: #ffffff;        /* white */
    --color-border: #e5e7eb;         /* gray-200 */
    --color-text: #111827;           /* gray-900 */
    --color-text-muted: #6b7280;     /* gray-500 */
    
    /* Spacing */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    
    /* Border Radius */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* ============================================
   2. TAILWIND EXTENSIONS
   ============================================ */

/* Custom Gradient Backgrounds */
.bg-gradient-primary {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
}

.bg-gradient-secondary {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
}

.bg-gradient-accent {
    background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
}

.bg-gradient-hero {
    background: linear-gradient(135deg, #dbeafe 0%, #dcfce7 100%);
}

/* ============================================
   3. COMPONENT STYLES
   ============================================ */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

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

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

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

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

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

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

.btn-ghost {
    background-color: transparent;
    color: var(--color-text);
}

.btn-ghost:hover {
    background-color: var(--color-background);
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

/* Cards */
.card {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.card-body {
    color: var(--color-text-muted);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.625rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
    background-color: var(--color-surface);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    background-color: var(--color-background);
    cursor: not-allowed;
    opacity: 0.6;
}

.form-error {
    color: var(--color-danger);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: block;
}

.form-hint {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: block;
}

/* Alerts & Messages */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--color-success);
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--color-warning);
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--color-danger);
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--color-info);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-primary {
    background-color: #dbeafe;
    color: var(--color-primary);
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

/* ============================================
   4. ANIMATIONS
   ============================================ */

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

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.4s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.4s ease-out;
}

.scale-in {
    animation: scaleIn 0.3s ease-out;
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ============================================
   5. RESPONSIVE UTILITIES
   ============================================ */

/* Mobile-first breakpoints */
@media (max-width: 640px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .btn-lg {
        padding: 0.625rem 1.25rem;
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
}

/* ============================================
   6. ACCESSIBILITY ENHANCEMENTS
   ============================================ */

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Remove focus outline for mouse users */
*:focus:not(:focus-visible) {
    outline: none;
}

/* Skip to main content link */
.skip-to-main {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-to-main:focus {
    top: 0;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        border-width: 2px;
    }
}

/* Dark mode support (if needed in future) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here */
}

/* ============================================
   7. UTILITY CLASSES
   ============================================ */

/* Text utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Hover effects */
.hover-lift {
    transition: transform var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

.hover-scale {
    transition: transform var(--transition-normal);
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* Loading spinner */
.spinner {
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   8. PRINT STYLES
   ============================================ */

@media print {
    header,
    footer,
    nav,
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}