/* 
  TPS.az Design System
  Colors: 
    - Deep Navy Blue (Primary Background): #001029
    - Industrial Grey (Secondary Bg/Text): #e2e8f0, #334155, #0f172a
    - Safety Orange / Gold (Accents): #F59E0B / #fb923c
  Typography:
    - San Francisco (Apple), fallback to system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif
*/

:root {
    /* Color Palette */
    --color-navy-dark: #000B1D;
    --color-navy: #001433;
    --color-navy-light: #0f2b5c;
    --color-grey-dark: #1e293b;
    --color-grey: #64748b;
    --color-grey-light: #f1f5f9;
    --color-accent: #F59E0B; /* Safety Gold/Orange */
    --color-accent-hover: #d97706;
    --color-white: #ffffff;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, "SF Pro Display", "San Francisco", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    
    /* Spacing & Layout */
    --container-width: 1200px;
    --section-padding: 100px 0;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(245, 158, 11, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-grey-dark);
    background-color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-navy);
}

p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    color: var(--color-grey);
}

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

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

/* Layout Classes */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
}

.section {
    padding: var(--section-padding);
}

.bg-light {
    background-color: var(--color-grey-light);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-3 { margin-top: 1rem; }
.text-white { color: var(--color-white) !important; }
.text-light-gray { color: #cbd5e1 !important; }

/* Typography Extras */
.section-subtitle {
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.divider {
    height: 4px;
    width: 60px;
    background-color: var(--color-accent);
    border-radius: 2px;
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-primary);
    border-radius: 4px; /* Industrial rigid look */
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: var(--color-white);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-outline:hover {
    background-color: var(--color-white);
    color: var(--color-navy);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all var(--transition-base);
    background-color: transparent;
}

.navbar.scrolled {
    background-color: rgba(0, 20, 51, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
}

.logo-tps { color: var(--color-white); }
.logo-az { color: var(--color-accent); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn) {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a:not(.btn):hover {
    color: var(--color-white);
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.nav-btn {
    padding: 0.5rem 1.25rem;
}

.mobile-menu-btn {
    display: none;
    color: var(--color-white);
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background-color: var(--color-navy);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    padding: 5rem 2rem;
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-close {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    color: var(--color-white);
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-link {
    color: var(--color-white);
    font-size: 1.2rem;
    font-weight: 600;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.mobile-btn {
    margin-top: 2rem;
    text-align: center;
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    position: relative;
    color: var(--color-white);
}

.hero-content {
    max-width: 800px;
    z-index: 2;
}

.hero-title {
    font-size: 4rem;
    color: var(--color-white);
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.highlight {
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.7);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.8;
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 36px;
    border: 2px solid rgba(255,255,255,0.7);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% { top: 6px; opacity: 1; }
    100% { top: 20px; opacity: 0; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-10px) translateX(-50%); }
    60% { transform: translateY(-5px) translateX(-50%); }
}

/* About Section */
.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: 4px;
    padding-bottom: 20px;
    padding-left: 20px;
}

.image-wrapper::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80%;
    height: 80%;
    background-color: var(--color-navy);
    z-index: -1;
    border-radius: 4px;
}

.bordered-img {
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
}

.experience-badge {
    position: absolute;
    bottom: 40px;
    right: -20px;
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 1.5rem;
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-grey-light);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-navy);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-grey);
    text-transform: uppercase;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background-color: var(--color-white);
    padding: 2.5rem;
    border-radius: 4px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
    border-bottom: 3px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-bottom-color: var(--color-accent);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--color-navy);
    margin-bottom: 1.5rem;
    transition: color var(--transition-base);
}

.service-card:hover .service-icon {
    color: var(--color-accent);
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.service-desc {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.service-link {
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.service-link i {
    transition: transform var(--transition-base);
}

.service-link:hover i {
    transform: translateX(5px);
}

.service-image-card {
    margin: -2.5rem -2.5rem 1.5rem -2.5rem;
    height: 150px;
    overflow: hidden;
}

.card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.service-card:hover .card-img {
    transform: scale(1.05);
}

/* Why Choose Us Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 3rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
}

.feature-icon-wrapper {
    width: 80px;
    height: 80px;
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem auto;
    transition: all var(--transition-base);
}

.feature-item:hover .feature-icon-wrapper {
    background-color: var(--color-accent);
    color: var(--color-white);
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.feature-item h4 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.feature-item p {
    font-size: 0.95rem;
}

/* Contact Section */
.contact-form-wrapper {
    background-color: var(--color-white);
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
    padding: 3rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

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

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    background-color: #f8fafc;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
    background-color: var(--color-white);
}

.info-list {
    margin-top: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-top: 0.2rem;
}

.info-item h5 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

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

.form-success {
    display: none;
    background-color: #10b981;
    color: white;
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1rem;
    text-align: center;
    font-weight: 600;
}

/* Footer */
.footer {
    background-color: var(--color-navy-dark);
    color: var(--color-grey-light);
    padding: 4rem 0 2rem 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-title {
    color: var(--color-white);
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.footer-links ul {
    list-style: none;
}

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

.footer-links a {
    color: #cbd5e1;
}

.footer-links a:hover {
    color: var(--color-accent);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background-color: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--color-white);
    transition: all var(--transition-base);
}

.social-icons a:hover {
    background-color: var(--color-accent);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    color: #94a3b8;
}

/* Animations (Scroll Reveal) */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translate(0, 0);
}

/* Stagger Effects */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.3s; }
.stagger-3 { transition-delay: 0.5s; }

/* Responsive Design */
@media (max-width: 992px) {
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .services-grid, .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .about-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .services-grid, .features-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn-lg {
        padding: 0.8rem 1.5rem;
    }
    
    .contact-form-wrapper {
        padding: 2rem;
    }
    
    .section {
        padding: 60px 0;
    }
}