/* ============================================
   SLK INNOVATIONS - Main Stylesheet
   Clean | Professional | Corporate
   ============================================ */

/* ----- Google Fonts ----- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ----- CSS Variables ----- */
:root {
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --primary-light: #3B82F6;
    --dark-bg: #0F172A;
    --light-bg: #F8FAFC;
    --white: #FFFFFF;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-light: #94A3B8;
    --border-color: #E2E8F0;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --card-shadow-hover: 0 10px 25px rgba(37, 99, 235, 0.12), 0 4px 10px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
    --radius: 12px;
    --radius-sm: 8px;
}

/* ----- Reset & Base ----- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    background-color: var(--white);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

ul {
    list-style: none;
}

/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ----- Section Spacing ----- */
.section-padding {
    padding: 100px 0;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3.5rem;
    line-height: 1.8;
}

.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary);
    margin-bottom: 0.75rem;
    background: rgba(37, 99, 235, 0.08);
    padding: 6px 16px;
    border-radius: 50px;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    padding: 18px 0;
    transition: var(--transition);
    z-index: 1050;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.97) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 10px rgba(0, 0, 0, 0.06);
    padding: 8px 0;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: #fff !important;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.navbar-logo {
    height: 100px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
}

.navbar.scrolled .navbar-logo {
    height: 50px;
}

.navbar-brand span {
    color: rgba(255, 255, 255, 0.85);
}

.navbar.scrolled .navbar-brand {
    color: var(--primary) !important;
}

.navbar.scrolled .navbar-brand span {
    color: var(--text-primary);
}

.navbar.scrolled .nav-link {
    color: var(--text-primary) !important;
}

.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active {
    color: var(--primary) !important;
}

.navbar.scrolled .navbar-toggler {
    color: var(--text-primary);
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85) !important;
    padding: 8px 18px !important;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #fff !important;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 18px;
    right: 18px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.navbar-toggler {
    border: none;
    padding: 8px;
    font-size: 1.25rem;
    color: #fff;
    box-shadow: none !important;
}

.navbar-toggler:focus {
    box-shadow: none;
}

/* Navbar CTA Button */
.nav-cta {
    background: var(--primary);
    color: var(--white) !important;
    border-radius: 50px;
    padding: 10px 24px !important;
    font-weight: 600;
    font-size: 0.9rem;
    margin-left: 10px;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--primary-dark);
    color: var(--white) !important;
    transform: translateY(-1px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-content h1 .highlight {
    color: var(--primary-light);
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 560px;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

/* ----- Buttons ----- */
.btn-primary-custom {
    background: var(--primary);
    color: var(--white);
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid var(--primary);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary-custom:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
}

.btn-outline-custom {
    background: transparent;
    color: var(--white);
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.25);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-outline-custom:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-white-custom {
    background: var(--white);
    color: var(--primary);
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-white-custom:hover {
    background: var(--light-bg);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 3.5rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stats .stat h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 0.25rem;
}

.hero-stats .stat p {
    font-size: 0.85rem;
    color: var(--text-light);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ============================================
   ABOUT PREVIEW SECTION
   ============================================ */
.about-preview {
    background: var(--light-bg);
}

.about-preview-content h2 {
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.about-preview-content p {
    margin-bottom: 1.25rem;
}

.about-feature-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
}

.about-feature-list li {
    padding: 8px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
}

.about-feature-list li i {
    color: var(--primary);
    font-size: 1rem;
    width: 24px;
    height: 24px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ============================================
   SERVICE CARDS
   ============================================ */
.service-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    transition: var(--transition);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
    border-color: transparent;
}

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

.service-card .icon-box {
    width: 60px;
    height: 60px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.service-card:hover .icon-box {
    background: var(--primary);
}

.service-card .icon-box i {
    font-size: 1.5rem;
    color: var(--primary);
    transition: var(--transition);
}

.service-card:hover .icon-box i {
    color: var(--white);
}

.service-card h4 {
    font-weight: 700;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.service-card p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

/* ============================================
   WHY CHOOSE US
   ============================================ */
.why-choose-section {
    background: var(--dark-bg);
    color: var(--white);
}

.why-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    transition: var(--transition);
    height: 100%;
}

.why-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
    border-color: rgba(37, 99, 235, 0.3);
}

.why-card .icon-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.why-card .icon-circle i {
    font-size: 1.3rem;
    color: var(--primary-light);
}

.why-card h4 {
    color: var(--white);
    font-weight: 700;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.why-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

/* ============================================
   EXPERIENCE SECTION
   ============================================ */
.experience-section {
    background: var(--light-bg);
}

.experience-content h2 {
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.exp-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.exp-item i {
    color: var(--primary);
    font-size: 1.1rem;
    margin-top: 4px;
    flex-shrink: 0;
}

.exp-item p {
    margin: 0;
    font-size: 0.95rem;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.cta-section h2 {
    color: var(--white);
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--dark-bg);
    color: var(--text-light);
    padding-top: 80px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 1rem;
}

.footer-logo-img {
    height: 100px;
    width: auto;
    object-fit: contain;
}

.footer-logo span {
    color: var(--primary-light);
}

.footer-description {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    max-width: 320px;
}

.footer h5 {
    color: var(--white);
    font-weight: 700;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-light);
    font-size: 0.95rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.footer-contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 1rem;
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-contact-info li i {
    color: var(--primary-light);
    margin-top: 4px;
    flex-shrink: 0;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 1.5rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: var(--transition);
    font-size: 1rem;
}

.footer-social a:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 25px 0;
    margin-top: 60px;
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

.footer-bottom a {
    color: var(--primary-light);
}

/* ============================================
   PAGE HEADER (Inner Pages)
   ============================================ */
.page-header {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    padding: 180px 0 80px;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
    border-radius: 50%;
}

.page-header h1 {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
}

.page-header p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
}

.breadcrumb-custom {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 1.5rem;
}

.breadcrumb-custom a {
    color: var(--text-light);
    font-size: 0.9rem;
}

.breadcrumb-custom a:hover {
    color: var(--primary-light);
}

.breadcrumb-custom span {
    color: var(--text-light);
    font-size: 0.85rem;
}

.breadcrumb-custom .current {
    color: var(--primary-light);
    font-weight: 500;
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-section-block {
    padding: 60px 0;
}

.about-section-block:nth-child(even) {
    background: var(--light-bg);
}

.about-section-block h2 {
    font-weight: 800;
    margin-bottom: 1.25rem;
}

.about-section-block h3 {
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary);
}

.about-section-block p {
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.85;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.about-value-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
}

.about-value-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

.about-value-card i {
    font-size: 1.75rem;
    color: var(--primary);
    margin-bottom: 1rem;
    display: block;
}

.about-value-card h4 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.about-value-card p {
    font-size: 0.95rem;
    margin: 0;
}

/* ============================================
   SERVICES PAGE - Detailed
   ============================================ */
.service-detail-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 3rem 2.5rem;
    transition: var(--transition);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.service-detail-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transition: var(--transition);
}

.service-detail-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
    border-color: transparent;
}

.service-detail-card:hover::after {
    transform: scaleX(1);
}

.service-detail-card .service-icon {
    width: 72px;
    height: 72px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.75rem;
    transition: var(--transition);
}

.service-detail-card:hover .service-icon {
    background: var(--primary);
}

.service-detail-card .service-icon i {
    font-size: 1.75rem;
    color: var(--primary);
    transition: var(--transition);
}

.service-detail-card:hover .service-icon i {
    color: var(--white);
}

.service-detail-card h4 {
    font-weight: 700;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.service-detail-card p {
    font-size: 0.95rem;
    line-height: 1.8;
}

.service-detail-card .service-features {
    list-style: none;
    padding: 0;
    margin-top: 1.25rem;
}

.service-detail-card .service-features li {
    padding: 6px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-detail-card .service-features li i {
    color: var(--primary);
    font-size: 0.75rem;
}

/* ============================================
   PRIVACY PAGE
   ============================================ */
.privacy-content {
    max-width: 800px;
    margin: 0 auto;
}

.privacy-content h2 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.privacy-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.privacy-content p {
    margin-bottom: 1rem;
    line-height: 1.85;
}

.privacy-content ul {
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.privacy-content ul li {
    padding: 4px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    list-style: disc;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.contact-form-wrapper {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 3rem;
}

.contact-form-wrapper h3 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.contact-form-wrapper p {
    margin-bottom: 2rem;
}

.form-control-custom {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    transition: var(--transition);
    background: var(--light-bg);
    width: 100%;
    outline: none;
}

.form-control-custom:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--white);
}

.form-control-custom::placeholder {
    color: var(--text-light);
}

.form-label-custom {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: block;
}

textarea.form-control-custom {
    min-height: 140px;
    resize: vertical;
}

.contact-info-card {
    background: var(--dark-bg);
    border-radius: var(--radius);
    padding: 3rem;
    height: 100%;
    color: var(--white);
}

.contact-info-card h3 {
    color: var(--white);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.contact-info-card > p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 1.75rem;
    align-items: flex-start;
}

.contact-info-item .icon-wrap {
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-item .icon-wrap i {
    font-size: 1.1rem;
    color: var(--primary-light);
}

.contact-info-item h5 {
    color: var(--white);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.contact-info-item p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.6;
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #25D366;
    color: var(--white);
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    margin-top: 1rem;
    border: none;
    cursor: pointer;
}

.whatsapp-btn:hover {
    background: #1da851;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.3);
}

.map-placeholder {
    border-radius: var(--radius);
    overflow: hidden;
    margin-top: 2rem;
    border: 1px solid var(--border-color);
}

.map-placeholder iframe {
    width: 100%;
    height: 300px;
    border: none;
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Large Tablets and Below */
@media (max-width: 991.98px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.85rem; }

    .hero-content h1 {
        font-size: 2.75rem;
    }

    .hero-stats {
        gap: 2rem;
    }

    .section-padding {
        padding: 70px 0;
    }

    /* --- Navbar Mobile --- */
    .navbar-logo {
        height: 50px;
    }

    .navbar.scrolled .navbar-logo {
        height: 40px;
    }

    .navbar-brand {
        font-size: 1.25rem;
        gap: 6px;
    }

    .navbar {
        padding: 10px 0;
    }

    .navbar.scrolled {
        padding: 6px 0;
    }

    .nav-cta {
        margin-left: 0;
        margin-top: 10px;
        display: inline-block;
    }

    /* Mobile dropdown menu */
    .navbar-collapse {
        background: rgba(15, 23, 42, 0.97);
        backdrop-filter: blur(16px);
        border-radius: 12px;
        padding: 20px 24px;
        margin-top: 10px;
        border: 1px solid rgba(255, 255, 255, 0.08);
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    }

    .navbar.scrolled .navbar-collapse {
        background: rgba(255, 255, 255, 0.98);
        border: 1px solid var(--border-color);
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    }

    .navbar-collapse .nav-link {
        padding: 12px 16px !important;
        font-size: 1rem;
        border-radius: 8px;
    }

    .navbar-collapse .nav-link:hover,
    .navbar-collapse .nav-link.active {
        background: rgba(37, 99, 235, 0.1);
    }

    .navbar-collapse .nav-link.active::after {
        display: none;
    }

    .navbar.scrolled .navbar-collapse .nav-link {
        color: var(--text-primary) !important;
    }

    .navbar.scrolled .navbar-collapse .nav-link:hover,
    .navbar.scrolled .navbar-collapse .nav-link.active {
        color: var(--primary) !important;
        background: rgba(37, 99, 235, 0.06);
    }

    .navbar-collapse .nav-cta {
        margin-top: 8px;
        text-align: center;
        display: block;
    }

    .page-header {
        padding: 130px 0 60px;
    }

    .page-header h1 {
        font-size: 2.25rem;
    }

    /* Footer mobile */
    .footer-logo-img {
        height: 60px;
    }

    .footer-logo {
        font-size: 1.25rem;
    }
}

/* Tablets */
@media (max-width: 767.98px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.65rem; }

    .hero-section {
        padding-top: 80px;
        min-height: auto;
        padding-bottom: 60px;
    }

    .hero-content h1 {
        font-size: 2.25rem;
    }

    .hero-content p {
        font-size: 1.05rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .hero-stats .stat {
        flex: 0 0 45%;
    }

    .section-padding {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.85rem;
    }

    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 2.5rem;
    }

    .contact-form-wrapper,
    .contact-info-card {
        padding: 2rem;
    }

    .service-detail-card {
        padding: 2rem 1.5rem;
    }

    .footer {
        padding-top: 50px;
    }

    .footer-bottom {
        margin-top: 40px;
        padding: 20px 0;
    }

    .footer-bottom .row {
        text-align: center;
    }

    .footer-bottom .text-md-end {
        text-align: center !important;
        margin-top: 5px;
    }

    .page-header {
        padding: 120px 0 50px;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    /* CTA section mobile */
    .cta-section h2 {
        font-size: 1.65rem;
    }

    .cta-section p {
        font-size: 1rem;
    }

    /* Why choose cards */
    .why-card {
        padding: 2rem 1.5rem;
    }

    /* Experience section */
    .exp-item {
        margin-bottom: 1rem;
    }
}

/* Mobile */
@media (max-width: 575.98px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }

    .navbar-logo {
        height: 42px;
    }

    .navbar.scrolled .navbar-logo {
        height: 36px;
    }

    .navbar-brand {
        font-size: 1.1rem;
        gap: 5px;
    }

    .navbar-toggler {
        font-size: 1.1rem;
        padding: 6px;
    }

    .navbar-collapse {
        padding: 16px 20px;
        margin-top: 8px;
    }

    .navbar-collapse .nav-link {
        padding: 10px 14px !important;
        font-size: 0.95rem;
    }

    .hero-section {
        padding-top: 70px;
        padding-bottom: 50px;
    }

    .hero-content h1 {
        font-size: 1.75rem;
        letter-spacing: -0.5px;
    }

    .hero-content p {
        font-size: 0.95rem;
        line-height: 1.7;
        margin-bottom: 2rem;
    }

    .hero-stats {
        gap: 1rem;
        margin-top: 2.5rem;
        padding-top: 1.5rem;
    }

    .hero-stats .stat {
        flex: 0 0 45%;
    }

    .hero-stats .stat h3 {
        font-size: 1.4rem;
    }

    .hero-stats .stat p {
        font-size: 0.75rem;
        letter-spacing: 0.5px;
    }

    .btn-primary-custom,
    .btn-outline-custom,
    .btn-white-custom {
        padding: 12px 24px;
        font-size: 0.88rem;
        width: 100%;
        justify-content: center;
    }

    .d-flex.flex-wrap.gap-3 {
        flex-direction: column;
        gap: 12px !important;
    }

    .section-padding {
        padding: 45px 0;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section-subtitle {
        font-size: 0.95rem;
    }

    .contact-form-wrapper,
    .contact-info-card {
        padding: 1.25rem;
    }

    .cta-section {
        padding: 50px 0;
    }

    .cta-section h2 {
        font-size: 1.5rem;
    }

    .page-header {
        padding: 110px 0 35px;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }

    .page-header p {
        font-size: 0.92rem;
    }

    .breadcrumb-custom {
        font-size: 0.85rem;
        margin-bottom: 1rem;
    }

    /* Service cards mobile */
    .service-card {
        padding: 2rem 1.5rem;
    }

    .service-detail-card {
        padding: 1.5rem 1.25rem;
    }

    /* Footer mobile */
    .footer {
        padding-top: 40px;
    }

    .footer-logo-img {
        height: 50px;
    }

    .footer-logo {
        font-size: 1.15rem;
    }

    .footer-description {
        font-size: 0.9rem;
        max-width: 100%;
    }

    .footer h5 {
        font-size: 1rem;
        margin-bottom: 1rem;
        margin-top: 0.5rem;
    }

    .footer-links a {
        font-size: 0.9rem;
    }

    .footer-contact-info li {
        font-size: 0.9rem;
    }

    .footer-social a {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }

    .footer-bottom {
        margin-top: 30px;
        padding: 18px 0;
    }

    .footer-bottom p {
        font-size: 0.8rem;
    }

    /* About page mobile */
    .about-feature-list li {
        font-size: 0.9rem;
    }

    /* Process steps mobile */
    .process-step {
        padding: 1.5rem;
    }

    /* Back to top smaller on mobile */
    .back-to-top {
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
        bottom: 20px;
        right: 20px;
    }
}

/* Extra Small Mobile */
@media (max-width: 399.98px) {
    .navbar-brand {
        font-size: 0.95rem;
        gap: 4px;
    }

    .navbar-logo {
        height: 36px;
    }

    .navbar.scrolled .navbar-logo {
        height: 32px;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-content p {
        font-size: 0.9rem;
    }

    .hero-stats .stat h3 {
        font-size: 1.25rem;
    }

    .page-header {
        padding: 100px 0 30px;
    }

    .page-header h1 {
        font-size: 1.35rem;
    }

    .section-title {
        font-size: 1.35rem;
    }

    .cta-section h2 {
        font-size: 1.35rem;
    }

    .footer-logo-img {
        height: 42px;
    }

    .footer-logo {
        font-size: 1.05rem;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-primary-custom {
    color: var(--primary) !important;
}

.bg-light-custom {
    background-color: var(--light-bg) !important;
}

.bg-dark-custom {
    background-color: var(--dark-bg) !important;
}

.fw-800 {
    font-weight: 800 !important;
}

.letter-spacing-1 {
    letter-spacing: 1px;
}

/* ----- Preloader ----- */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hide {
    opacity: 0;
    visibility: hidden;
}

.preloader .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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