/* ===================================
   AM Steels & Cements - Design System
   =================================== */

/* === CSS Variables & Design Tokens === */
:root {
  /* Color Palette - Industrial & Modern */
  --primary-orange: hsl(25, 95%, 53%);
  --primary-orange-light: hsl(25, 95%, 63%);
  --primary-orange-dark: hsl(25, 95%, 43%);

  --secondary-blue: hsl(210, 100%, 12%);
  --secondary-blue-light: hsl(210, 50%, 20%);
  --secondary-blue-dark: hsl(210, 100%, 8%);

  --accent-steel: hsl(200, 15%, 45%);
  --accent-concrete: hsl(30, 8%, 65%);

  --neutral-100: hsl(0, 0%, 98%);
  --neutral-200: hsl(0, 0%, 92%);
  --neutral-300: hsl(0, 0%, 85%);
  --neutral-700: hsl(0, 0%, 25%);
  --neutral-800: hsl(0, 0%, 15%);
  --neutral-900: hsl(0, 0%, 10%);

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, var(--secondary-blue) 0%, var(--secondary-blue-dark) 100%);
  --gradient-accent: linear-gradient(135deg, var(--primary-orange) 0%, var(--primary-orange-dark) 100%);
  --gradient-overlay: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.7));

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;

  /* Spacing Scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 400ms ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  color: var(--neutral-800);
  background-color: var(--neutral-100);
  line-height: 1.6;
  overflow-x: hidden;
}

/* === Typography === */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--neutral-900);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

p {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  color: var(--neutral-700);
}

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

.navbar.scrolled {
  padding: 1rem 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

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

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: white;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color var(--transition-base);
}

.navbar.scrolled .logo {
  color: var(--secondary-blue);
}

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

.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-family: var(--font-display);
  transition: all var(--transition-base);
  position: relative;
}

.navbar.scrolled .nav-links a {
  color: var(--neutral-800);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-orange);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}

.nav-links a:hover {
  color: white;
}

.navbar.scrolled .nav-links a:hover {
  color: var(--primary-orange);
}

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: white;
  margin: 5px 0;
  transition: all 0.3s ease;
}

.navbar.scrolled .nav-toggle span {
  background: var(--neutral-800);
}

@media (max-width: 768px) {
  .navbar {
    padding: 1rem 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    flex-direction: column;
    background: var(--secondary-blue);
    padding: 2rem;
    gap: 1.5rem;
    text-align: center;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
    z-index: -1;
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    font-size: 1.25rem;
    color: white !important;
  }

  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* === Contact Section === */
.contact-container {
  display: flex;
  justify-content: center;
  max-width: 800px;
  margin: 0 auto;
}

.contact-form {
  width: 100%;
  background: white;
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-weight: 600;
  color: var(--neutral-900);
  font-size: 0.95rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--neutral-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
  background: var(--neutral-100);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary-orange);
  background: white;
  box-shadow: 0 0 0 4px rgba(255, 87, 34, 0.1);
}

.contact-form textarea {
  min-height: 150px;
  resize: vertical;
}

.contact-form button[type="submit"] {
  grid-column: 1 / -1;
  width: 100%;
  justify-content: center;
  margin-top: var(--space-sm);
  font-size: 1.125rem;
  padding: 1rem;
}

/* Form Status Messages */
.form-status {
  grid-column: 1 / -1;
  padding: 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  text-align: center;
  display: none;
}

.form-status.success {
  display: block;
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.form-status.error {
  display: block;
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

@media (max-width: 768px) {
  form.contact-form {
    display: flex !important;
    flex-direction: column !important;
    padding: var(--space-md);
    gap: var(--space-md);
  }

  .contact-container {
    padding: 0 var(--space-sm);
  }

  .form-group label {
    font-size: 0.9rem;
  }
}

/* === Button Styles === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 1rem 2rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
}

.btn:hover::before {
  transform: translateX(100%);
}

.btn-primary {
  background: var(--gradient-accent);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: white;
  color: var(--primary-orange);
  border: 2px solid var(--primary-orange);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--primary-orange);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-whatsapp {
  background: #25D366;
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-whatsapp:hover {
  background: #20BA5A;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* === Container & Layout === */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title h2 {
  margin-bottom: var(--space-sm);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title p {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto;
}

/* === Hero Section === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('hero-bg.png') center/cover no-repeat;
  opacity: 0.3;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-overlay);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  max-width: 900px;
  padding: var(--space-2xl);
  animation: fadeInUp 1s ease-out;
}

.hero-title {
  color: white;
  margin-bottom: var(--space-md);
  text-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  color: var(--neutral-200);
  margin-bottom: var(--space-xl);
  font-weight: 300;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* === Product Cards === */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.product-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

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

.product-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border-radius: var(--radius-md);
  font-size: 2.5rem;
  color: white;
  box-shadow: var(--shadow-md);
}

.product-card h3 {
  text-align: center;
  margin-bottom: var(--space-sm);
  color: var(--neutral-900);
}

.product-card p {
  text-align: center;
  font-size: 1rem;
  color: var(--neutral-700);
}

/* === Testimonials === */
.testimonials {
  background: var(--secondary-blue);
  color: white;
}

.testimonials .section-title h2 {
  color: white;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.testimonials .section-title p {
  color: var(--neutral-300);
}

.testimonials-grid {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding: 1rem 0.5rem var(--space-md) 0.5rem;
  /* Add horizontal padding to prevent cut-off shadows */
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  /* Firefox */
  scrollbar-color: var(--primary-orange) transparent;
}

/* Custom Scrollbar for Chrome/Safari/Edge */
.testimonials-grid::-webkit-scrollbar {
  height: 8px;
}

.testimonials-grid::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.testimonials-grid::-webkit-scrollbar-thumb {
  background-color: var(--primary-orange);
  border-radius: 4px;
}

.testimonial-card {
  min-width: 350px;
  max-width: 400px;
  flex: 0 0 auto;
  scroll-snap-align: center;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.testimonial-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.testimonial-rating {
  color: var(--primary-orange);
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.testimonial-text {
  font-size: 1.125rem;
  font-style: italic;
  color: var(--neutral-200);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
}

.author-info h4 {
  color: white;
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.author-info p {
  color: var(--accent-concrete);
  font-size: 0.875rem;
}

/* === WhatsApp Floating Button === */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  z-index: 1000;
  transition: all var(--transition-base);
  animation: pulse 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

.whatsapp-float svg {
  width: 35px;
  height: 35px;
  fill: white;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
  }

  50% {
    box-shadow: 0 0 0 20px rgba(37, 211, 102, 0);
  }
}

/* === Responsive Design === */
@media (max-width: 768px) {

  /* Container padding reduction for mobile */
  .container {
    padding: 0 var(--space-sm);
  }

  /* Make testimonial cards more responsive */
  .testimonial-card {
    min-width: 85vw;
    /* Use viewport width instead of fixed px */
    max-width: 90vw;
  }

  .products-grid {
    grid-template-columns: 1fr;
    /* Ensure no overflow issues */
    width: 100%;
    margin-top: var(--space-xl);
  }

  /* Fix Hero CTA layout */
  .hero-cta {
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  .btn {
    width: 100%;
    max-width: 100%;
    /* Allow full width */
    justify-content: center;
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .whatsapp-float {
    bottom: 1rem;
    right: 1rem;
    width: 50px;
    height: 50px;
  }

  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
}

/* === Utility Classes === */
.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: var(--space-xs);
}

.mt-2 {
  margin-top: var(--space-sm);
}

.mt-3 {
  margin-top: var(--space-md);
}

.mt-4 {
  margin-top: var(--space-lg);
}

.mb-1 {
  margin-bottom: var(--space-xs);
}

.mb-2 {
  margin-bottom: var(--space-sm);
}

.mb-3 {
  margin-bottom: var(--space-md);
}

.mb-4 {
  margin-bottom: var(--space-lg);
}