/* ============================================
   TECH KIMYA - ENHANCED PROFESSIONAL STYLES
   (Complements globalchem.css - load after it)
   ============================================ */

/* Extended palette (existing :root in globalchem.css - only add if needed) */
:root {
    --primary-light: #2d5a8f;
    --primary-dark: #0f2847;
    --secondary-light: #ffc107;
    --secondary-dark: #c79100;
    --gray-light: #e8ecf1;
    --gray-lighter: #f5f7fa;
    --lighter: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 15px 50px rgba(0, 0, 0, 0.2);
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 15px;
    --radius-round: 50%;
}

/* Header scroll behavior (works with existing header element) */
header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    padding: 10px 0;
}

/* ============================================
   ENHANCED TRUST INDICATORS (home & product pages)
   ============================================ */
.trust-indicators .trust-item {
    transition: all var(--transition-base);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.trust-indicators .trust-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
    transition: left var(--transition-base);
}

.trust-indicators .trust-item:hover::before {
    left: 0;
}

.trust-indicators .trust-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   ENHANCED BUTTONS
   ============================================ */
.btn {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(26, 58, 108, 0.35);
}

.btn-outline:hover {
    transform: translateY(-2px);
}

/* ============================================
   SECTOR CARDS (division cards on home)
   ============================================ */
.sector-card {
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.sector-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
    transform: scaleX(0);
    transition: transform var(--transition-base);
    z-index: 1;
}

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

.sector-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.sector-card .sector-img {
    transition: transform var(--transition-slow);
}

.sector-card:hover .sector-img {
    transform: scale(1.03);
}

/* ============================================
   ENHANCED TABS (product pages)
   ============================================ */
.product-tab {
    position: relative;
    transition: all var(--transition-base);
}

.product-tab:hover {
    background: rgba(230, 169, 3, 0.05);
}

/* ============================================
   ENHANCED CONTACT FORM
   ============================================ */
.contact-form input.form-control,
.contact-form select.form-control,
.contact-form textarea.form-control {
    transition: all var(--transition-base);
}

.contact-form input.form-control:focus,
.contact-form select.form-control:focus,
.contact-form textarea.form-control:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(230, 169, 3, 0.15);
}

.contact-form input.form-control.error,
.contact-form select.form-control.error,
.contact-form textarea.form-control.error {
    border-color: var(--danger);
    box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.2);
}

/* Contact cards as clickable links */
a.contact-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: all var(--transition-base);
    border-radius: var(--radius-md);
}

a.contact-card-link:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

a.contact-card-link:hover h4,
a.contact-card-link:hover p {
    color: var(--primary);
}

/* ============================================
   SCROLL ANIMATIONS (Intersection Observer adds .visible)
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.92);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* ============================================
   PAGE LOADER
   ============================================ */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--lighter, #fff);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.4s, visibility 0.4s;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--gray-light, #e8ecf1);
    border-top-color: var(--secondary);
    border-radius: 50%;
    animation: enhanced-spin 0.8s linear infinite;
}

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

/* ============================================
   BACK TO TOP ENHANCEMENT
   ============================================ */
.back-to-top {
    transition: all var(--transition-base);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   SKIP TO CONTENT (accessibility)
   ============================================ */
.skip-to-content {
    position: absolute;
    top: -50px;
    left: 12px;
    background: var(--secondary);
    color: var(--dark);
    padding: 10px 16px;
    text-decoration: none;
    font-weight: 600;
    z-index: 10001;
    transition: top var(--transition-fast);
    border-radius: var(--radius-sm);
}

.skip-to-content:focus {
    top: 12px;
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .fade-in, .slide-in-left, .slide-in-right, .scale-in,
    .page-loader .loader-spinner {
        animation: none !important;
        transition-duration: 0.01ms !important;
    }
    .fade-in, .slide-in-left, .slide-in-right, .scale-in {
        opacity: 1;
        transform: none;
    }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
    header, footer, .back-to-top, .page-loader {
        display: none !important;
    }
}