/**
 * Free Calorie Calculator Pro - Main Stylesheet
 * Modular CSS architecture for better maintainability
 */

/* Base Styles */
@import './base/variables.css';
@import './base/reset.css';
@import './base/typography.css';

/* Layout */
@import './components/layout.css';

/* Components */
@import './components/header.css';
@import './components/forms.css';
@import './components/cards.css';
@import './components/results.css';
@import './components/mobile-fixes.css';

/* Utilities */
@import './utilities/utilities.css';
@import './utilities/animations.css';

/* Legacy Components (to be gradually migrated) */

/* Collapsible Sections */
.collapsible-section {
    margin-top: var(--space-6);
    border: none;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #f8fafc;
}

@media (min-width: 768px) {
    .collapsible-section {
        margin-top: var(--space-8);
    }
}

.collapsible-trigger {
    width: 100%;
    padding: var(--space-4);
    background: #e2e8f0;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--gray-700);
    transition: var(--transition-base);
    min-height: var(--touch-target);
    touch-action: manipulation;
    border-radius: 12px 12px 0 0;
}

@media (min-width: 768px) {
    .collapsible-trigger {
        padding: var(--space-5);
    }
}

.collapsible-trigger:hover {
    background: #cbd5e1;
    color: var(--primary-600);
}

.collapsible-trigger:focus {
    outline: none;
    background: #cbd5e1;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.collapsible-trigger:active {
    transform: translateY(1px);
}

.collapsible-icon {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-slow);
    flex-shrink: 0;
}

.collapsible-trigger[aria-expanded="true"] .collapsible-icon {
    transform: rotate(180deg);
}

.collapsible-content {
    background: var(--white);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-slow), opacity 0.3s ease;
    padding: 0 var(--space-4);
    opacity: 0;
    visibility: hidden;
}

.collapsible-content.open {
    padding: var(--space-4);
    max-height: 1500px;
    opacity: 1;
    visibility: visible;
    overflow: visible;
}

@media (min-width: 768px) {
    .collapsible-content {
        padding: 0 var(--space-5);
    }

    .collapsible-content.open {
        padding: var(--space-5);
    }
}

.conditions-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    width: 100%;
    box-sizing: border-box;
}

@media (min-width: 480px) {
    .conditions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-3);
    }
}

@media (min-width: 768px) {
    .conditions-grid {
        grid-template-columns: repeat(3, 1fr);
        margin-bottom: var(--space-6);
        gap: var(--space-3);
    }
}

/* Condition Details */
.condition-details {
    margin-top: var(--space-4);
    padding: var(--space-4);
    background: var(--primary-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--primary-200);
}

.condition-details label {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    color: var(--gray-700);
    font-weight: var(--font-medium);
    margin-bottom: 0;
    cursor: pointer;
    min-height: var(--touch-target);
}

.condition-details input[type="checkbox"] {
    accent-color: var(--primary-500);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

@media (min-width: 768px) {
    .sidebar {
        gap: var(--space-6);
    }
}

/* Education Section */
.education-section {
    background: var(--white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    margin-top: var(--space-12);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--primary-200);
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .education-section {
        padding: var(--space-12);
        border-radius: var(--radius-2xl);
        margin-top: var(--space-16);
    }
}

@media (min-width: 1024px) {
    .education-section {
        padding: var(--space-16);
    }
}

.education-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-400) 0%, var(--primary-500) 50%, var(--primary-600) 100%);
}

@media (min-width: 768px) {
    .education-section::before {
        height: 6px;
    }
}

.education-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    margin-top: var(--space-6);
}

@media (min-width: 768px) {
    .education-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
        margin-top: var(--space-8);
    }
}

@media (min-width: 1024px) {
    .education-grid {
        gap: var(--space-10);
    }
}

/* Usage Tips */
.usage-tips {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin-top: var(--space-12);
}

@media (min-width: 640px) {
    .usage-tips {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
}

@media (min-width: 768px) {
    .usage-tips {
        grid-template-columns: repeat(3, 1fr);
        margin-top: var(--space-16);
    }
}

.tip-card {
    padding: var(--space-4);
    background: var(--primary-50);
    border: 1px solid var(--primary-200);
    border-radius: var(--radius-xl);
}

@media (min-width: 768px) {
    .tip-card {
        padding: var(--space-6);
    }
}

.tip-card h4 {
    color: var(--primary-600);
    margin-bottom: var(--space-2);
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
    line-height: var(--leading-tight);
}

@media (min-width: 768px) {
    .tip-card h4 {
        margin-bottom: var(--space-3);
        font-size: var(--text-base);
    }
}

.tip-card p {
    font-size: var(--text-xs);
    line-height: var(--leading-relaxed);
    color: var(--gray-700);
    margin: 0;
}

@media (min-width: 768px) {
    .tip-card p {
        font-size: var(--text-sm);
    }
}

/* Alerts & Warnings */
.disclaimer {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 1px solid var(--warning);
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    margin-top: var(--space-8);
}

@media (min-width: 768px) {
    .disclaimer {
        padding: var(--space-6);
        margin-top: var(--space-10);
    }
}

.disclaimer h4 {
    color: #92400e;
    margin-bottom: var(--space-2);
    font-weight: var(--font-bold);
    font-size: var(--text-sm);
    line-height: var(--leading-tight);
}

@media (min-width: 768px) {
    .disclaimer h4 {
        margin-bottom: var(--space-3);
        font-size: var(--text-base);
    }
}

.disclaimer p {
    color: #92400e;
    font-size: var(--text-xs);
    line-height: var(--leading-relaxed);
    margin: 0;
}

@media (min-width: 768px) {
    .disclaimer p {
        font-size: var(--text-sm);
    }
}

.safety-warning {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border: 1px solid var(--error);
    color: #991b1b;
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-top: var(--space-4);
    font-size: var(--text-xs);
    line-height: var(--leading-relaxed);
}

@media (min-width: 768px) {
    .safety-warning {
        padding: var(--space-5);
        margin-top: var(--space-6);
        font-size: var(--text-sm);
    }
}

.safety-warning strong {
    font-weight: var(--font-bold);
}

/* Ad Containers */
.ad-container {
    border: 1px solid #f3f4f6;
    border-radius: 12px;
    padding: var(--space-3);
    margin: var(--space-6) 0;
    text-align: center;
    background: #fafafa;
    min-height: 90px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

@media (min-width: 768px) {
    .ad-container {
        padding: var(--space-4);
        margin: var(--space-8) 0;
    }
}

.ad-label {
    font-size: 10px;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-2);
    font-weight: var(--font-medium);
}

.ad-header {
    margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
    .ad-header {
        margin-bottom: var(--space-8);
        min-height: 100px;
    }
}

/* REMOVED: In-content ad (AdSense policy compliance)
.ad-content {
    margin: var(--space-8) 0;
}

@media (min-width: 768px) {
    .ad-content {
        margin: var(--space-12) 0;
    }
}
*/

.ad-sidebar {
    margin: var(--space-6) 0;
}

.ad-footer {
    margin-top: var(--space-8);
}

@media (min-width: 768px) {
    .ad-footer {
        margin-top: var(--space-16);
        min-height: 120px;
    }
}

/* REMOVED: Mobile sticky ad (AdSense policy compliance)
.ad-mobile-sticky {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--white);
    border-top: 1px solid var(--gray-300);
    padding: var(--space-2);
    text-align: center;
    display: none;
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
}

@media (min-width: 768px) {
    .ad-mobile-sticky {
        display: none !important;
    }
}
*/

.ad-responsive {
    display: block;
    width: 100%;
    height: auto;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .calculator-card,
    .results-section,
    .info-card {
        border-width: 2px;
    }

    .input-field,
    .select-field {
        border-width: 2px;
    }

    .selection-label {
        border-width: 2px;
    }
}

/* Print Styles */
@media print {
    .ad-container {
        display: none !important;
    }

    .header {
        background: none !important;
        color: black !important;
    }

    .results-section {
        background: none !important;
        border: 1px solid black !important;
    }
}