/* Common Styles - Used across all pages */
:root {
    --cream: #FFF8F0;
    --white: #FFFFFF;
    --silver: #C0C0C0;
    --dark-silver: #A0A0A0;
    --dark: #333333;
    --accent: #8B4513;
    --accent-dark: #a05a2c;
    --blue: #4285F4;
    --shadow: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --shadow-xl: 0 12px 32px rgba(0,0,0,0.2);
    --shadow-hover: 0 6px 20px rgba(139, 69, 19, 0.25);
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
}

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

*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--cream);
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(139, 69, 19, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(192, 192, 192, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Button Styles */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    user-select: none;
    overflow: hidden;
    box-shadow: var(--shadow);
    letter-spacing: 0.3px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    border: 2px solid transparent;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent) 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--silver) 0%, var(--dark-silver) 100%);
    color: var(--dark);
    border: 2px solid var(--silver);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--dark-silver) 0%, var(--silver) 100%);
}

.btn-danger {
    background: linear-gradient(135deg, #ff4444 0%, #cc0000 100%);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, #25A525 0%, #1d7a1d 100%);
    color: white;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--silver);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group small {
    color: #666;
    font-size: 0.9rem;
    display: block;
    margin-top: 0.25rem;
}

/* Alert Styles */
.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    display: none;
}

.alert.show {
    display: block;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Card Styles */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(139, 69, 19, 0.1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-dark));
    transform: scaleX(0);
    transition: transform 0.3s;
}

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

.card:hover::before {
    transform: scaleX(1);
}

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

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--silver);
}

.modal-header h3 {
    color: var(--accent);
    font-size: 1.5rem;
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark);
    transition: color 0.3s;
}

.close-modal:hover {
    color: var(--accent);
}

/* Loading Spinner */
.spinner {
    border: 4px solid var(--silver);
    border-top: 4px solid var(--accent);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Utilities */
@media (max-width: 768px) {
    .btn {
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
        min-height: 44px; /* Better touch target */
        width: 100%;
        max-width: 100%;
    }
    
    .modal-content {
        width: 95%;
        padding: 1.5rem;
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }
    
    .card {
        padding: 1.25rem;
        border-radius: var(--radius);
    }
    
    body {
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 1rem 1.5rem;
        font-size: 1rem;
        min-height: 48px;
    }
    
    .modal-content {
        padding: 1.25rem;
        width: 98%;
        margin: 0.5rem;
        max-height: calc(100vh - 1rem);
    }
    
    .card {
        padding: 1rem;
    }
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in {
    animation: fadeIn 0.4s ease-out;
}

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

/* Improved focus styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Better scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 5px;
}

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