/* Proctology Research Platform - Main Styles */

/* CSS Variables - Warm Color Palette */
:root {
    --color-primary: #5a8f7b;
    --color-primary-light: #7ba996;
    --color-primary-dark: #3d6b59;
    --color-secondary: #8fb7a3;
    --color-accent: #b4cfbe;
    --color-warm-bg: #f5f7f5;
    --color-warm-bg-alt: #e8ede8;
    --color-text: #2c3e35;
    --color-text-light: #5a6f61;
    --color-border: #cbd5cd;
    --color-success: #6b9d7c;
    --color-warning: #d4a76a;
    --color-error: #c76f6f;
    --color-info: #6a9bc7;
    
    /* Gradient colors */
    --gradient-primary: linear-gradient(135deg, #5a8f7b 0%, #7ba996 50%, #8fb7a3 100%);
    --gradient-warm: linear-gradient(135deg, #b4cfbe 0%, #8fb7a3 50%, #7ba996 100%);
    --gradient-hover: linear-gradient(135deg, #3d6b59 0%, #5a8f7b 50%, #7ba996 100%);
    
    /* Category colors */
    --color-elective: #2d5f3f;
    --color-urgent: #8b2e2e;
    --color-emergency: #c41e1e;
    --color-semi-elective: #d4a76a;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-arabic: 'Cairo', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-warm-bg);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

body[dir="rtl"] {
    font-family: var(--font-arabic);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* Gradient Text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* Language Toggle */
.en { display: inline; }
.ar { display: none; }

[dir="rtl"] .en { display: none; }
[dir="rtl"] .ar { display: inline; }

/* Screen Management */
.screen {
    display: none;
}

.screen.active {
    display: block;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--gradient-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-warm-bg-alt);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-accent);
    border-color: var(--color-primary);
}

.btn-text {
    background: transparent;
    color: var(--color-primary);
    border: none;
    padding: var(--spacing-sm);
}

.btn-text:hover {
    color: var(--color-primary-dark);
    background-color: rgba(90, 143, 123, 0.1);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-icon-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: var(--gradient-warm);
    color: var(--color-text);
    border: 2px dashed var(--color-border);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-normal);
    width: 100%;
}

.btn-icon-large:hover {
    border-color: var(--color-primary);
    border-style: solid;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-icon-large i {
    font-size: 2rem;
}

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

.gradient-btn:hover {
    background: var(--gradient-hover);
    transform: scale(1.05);
}

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

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

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group input[type="time"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    background-color: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(90, 143, 123, 0.1);
}

.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled {
    background-color: var(--color-warm-bg-alt);
    cursor: not-allowed;
}

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

.form-group.inline {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-group.inline label {
    margin-bottom: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.full-width {
    grid-column: 1 / -1;
}

.calculated-field {
    background-color: var(--color-warm-bg-alt) !important;
    font-weight: 600;
    color: var(--color-primary);
}

.field-note {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-style: italic;
}

/* Selection Display */
.selection-display {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-warm-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    min-height: 60px;
}

.selection-display.chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.selection-box {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: white;
    border: 1px solid var(--color-primary);
    border-radius: 8px;
    margin: var(--spacing-xs);
    box-shadow: var(--shadow-sm);
}

.selection-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gradient-warm);
    border-radius: 16px;
    font-size: 0.875rem;
    font-weight: 500;
}

.remove-item {
    background: transparent;
    border: none;
    color: var(--color-error);
    cursor: pointer;
    padding: 0;
    font-size: 1.25rem;
    line-height: 1;
    transition: color var(--transition-fast);
}

.remove-item:hover {
    color: darkred;
}

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Count Badge */
.count-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 var(--spacing-xs);
    background-color: var(--color-error);
    color: white;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-left: var(--spacing-xs);
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }

.hidden { display: none !important; }
.visible { display: block !important; }