/**
 * Main CSS - Core Styles
 *
 * @package Digital_Future_Lab
 */

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 32px;
    font-size: 16px;
    font-weight: var(--font-weight-semi);
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    text-align: center;
    line-height: 1;
}

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

.btn-primary:hover {
    background: #0099CC;
    border-color: #0099CC;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 195, 255, 0.3);
}

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

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

.btn-block {
    display: block;
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-semi);
    color: var(--primary-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-gray);
    border-radius: 4px;
    font-size: 16px;
    font-family: var(--font-primary);
    transition: var(--transition-base);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 195, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 8px;
    padding: var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 720px;
    margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 14px;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--accent-blue);
}

.breadcrumb .separator {
    color: var(--text-secondary);
    user-select: none;
}

.breadcrumb .current {
    color: var(--text-primary);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xl);
}

.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 8px 12px;
    border: 1px solid var(--border-gray);
    border-radius: 4px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-base);
}

.pagination .page-numbers:hover,
.pagination .page-numbers.current {
    background: var(--accent-blue);
    color: var(--white);
    border-color: var(--accent-blue);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
}

.animate-fadeIn {
    animation: fadeIn 0.8s ease-out forwards;
    opacity: 0;
}

.animate-fadeInUp.animated,
.animate-fadeIn.animated {
    opacity: 1;
}

.animate-fadeInUp[data-delay="200"] {
    animation-delay: 0.2s;
}

.animate-fadeInUp[data-delay="400"] {
    animation-delay: 0.4s;
}

.animate-fadeIn[data-delay="200"] {
    animation-delay: 0.2s;
}

.animate-fadeIn[data-delay="400"] {
    animation-delay: 0.4s;
}

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

.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.hide-mobile {
    display: block;
}

@media (max-width: 768px) {
    .hide-mobile {
        display: none !important;
    }
    .mobile-only {
        display: block !important;
    }
    .text-center-mobile {
        text-align: center;
    }
}

@media (min-width: 769px) {
    .mobile-only {
        display: none !important;
    }
    .hide-desktop {
        display: none !important;
    }
}

/* Alert Messages */
.alert {
    padding: var(--spacing-md);
    border-radius: 4px;
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background: #D1FAE5;
    color: #065F46;
    border-left: 4px solid #10B981;
}

.alert-error {
    background: #FEE2E2;
    color: #991B1B;
    border-left: 4px solid #EF4444;
}

.alert-info {
    background: #DBEAFE;
    color: #1E40AF;
    border-left: 4px solid #3B82F6;
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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