/* ============================================================
   ROOFING SEO PORTFOLIO — Design System & Styles
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800;900&family=Work+Sans:wght@400;500;600&display=swap');

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Surfaces */
  --surface: #f7f9fb;
  --surface-dim: #d8dadc;
  --surface-bright: #f7f9fb;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f2f4f6;
  --surface-container: #eceef0;
  --surface-container-high: #e6e8ea;
  --surface-container-highest: #e0e3e5;

  /* On-Surface */
  --on-surface: #191c1e;
  --on-surface-variant: #45464d;

  /* Outline */
  --outline: #76777d;
  --outline-variant: #c6c6cd;

  /* Primary */
  --primary: #000000;
  --on-primary: #ffffff;
  --primary-container: #131b2e;
  --on-primary-container: #7c839b;

  /* Secondary (Emergency Orange) */
  --secondary: #9d4300;
  --on-secondary: #ffffff;
  --secondary-container: #fd761a;
  --on-secondary-container: #5c2400;
  --secondary-fixed-dim: #ffb690;

  /* Tertiary */
  --tertiary: #000000;
  --on-tertiary: #ffffff;
  --tertiary-container: #0d1c2f;
  --tertiary-fixed: #d5e3fd;

  /* Error */
  --error: #ba1a1a;
  --on-error: #ffffff;
  --error-container: #ffdad6;
  --on-error-container: #93000a;

  /* Background */
  --background: #f7f9fb;
  --on-background: #191c1e;

  /* Spacing */
  --container-max: 1280px;
  --gutter: 32px;
  --section-padding: 100px;
  --stack-sm: 16px;
  --stack-md: 32px;
  --stack-lg: 64px;

  /* Radius */
  --radius-sm: 0.125rem;
  --radius: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(19, 27, 46, 0.12);
  --shadow-cta: 0 15px 40px -15px rgba(253, 118, 26, 0.6);
  --shadow-cta-hover: 0 20px 50px -15px rgba(253, 118, 26, 0.75);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Work Sans', sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--on-background);
  background-color: var(--background);
  min-height: 100vh;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input {
  font-family: inherit;
  border: none;
  outline: none;
}

/* --- Typography --- */
.font-h1 {
  font-family: 'Inter', sans-serif;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.font-h2 {
  font-family: 'Inter', sans-serif;
  font-size: clamp(30px, 4.5vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.font-h3 {
  font-family: 'Inter', sans-serif;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.font-body-lg {
  font-family: 'Work Sans', sans-serif;
  font-size: 20px;
  line-height: 1.6;
}

.font-body-md {
  font-family: 'Work Sans', sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

.font-label-bold {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.font-stat-number {
  font-family: 'Inter', sans-serif;
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
}

/* --- Layout --- */
.main-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--section-padding) var(--gutter);
  display: flex;
  flex-direction: column;
  gap: var(--section-padding);
}

@media (min-width: 768px) {
  .main-container {
    max-width: 1080px;
    padding-left: 0;
    padding-right: 0;
  }
}

@media (min-width: 1024px) {
  .main-container {
    max-width: 1200px;
  }
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  display: flex;
  flex-direction: column;
  gap: var(--stack-lg);
  align-items: center;
  text-align: center;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  gap: var(--stack-md);
  align-items: center;
}

.hero__badge {
  display: inline-block;
  padding: 8px 18px;
  background: var(--surface-container-high);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface-variant);
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
}

.hero__title {
  color: var(--primary);
  max-width: 780px;
}

.hero__subtitle {
  color: var(--on-surface-variant);
  max-width: 600px;
  font-size: 20px;
}

/* --- CTA Button --- */
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 18px 40px;
  background: var(--secondary-container);
  color: var(--on-secondary);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-lg);
  border-top: 1px solid var(--secondary);
  box-shadow: var(--shadow-cta);
  transition: all 0.25s ease;
  width: 100%;
  max-width: 360px;
}

.btn-cta:hover {
  background: var(--secondary);
  box-shadow: var(--shadow-cta-hover);
  transform: translateY(-2px);
}

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

.btn-cta .arrow-icon {
  font-size: 20px;
  transition: transform 0.25s ease;
}

.btn-cta:hover .arrow-icon {
  transform: translateX(4px);
}

/* ============================================================
   PROOF STRIP
   ============================================================ */
.proof-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--stack-sm);
  width: 100%;
}

@media (min-width: 768px) {
  .proof-strip {
    grid-template-columns: repeat(4, 1fr);
  }
}

.proof-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-radius: var(--radius);
  align-items: center;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.proof-card__number {
  color: var(--primary);
}

.proof-card__label {
  color: var(--on-surface-variant);
}

/* ============================================================
   CASE STUDY CAROUSEL
   ============================================================ */
.case-studies {
  display: flex;
  flex-direction: column;
  gap: var(--stack-md);
}

.case-studies__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.carousel-pagination-main {
  display: flex;
  gap: 8px;
}

.carousel-pagination-main .dot {
  width: 12px;
  height: 12px;
  background: var(--surface-container-highest);
  border: 1px solid var(--outline-variant);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.carousel-pagination-main .dot.active {
  background: var(--primary);
  border-color: var(--primary);
}

.case-studies__nav {
  display: flex;
  gap: 12px;
}

.carousel-btn {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  transition: all 0.2s ease;
  font-size: 24px;
}

.carousel-btn--prev {
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface);
}

.carousel-btn--prev:hover {
  background: var(--surface-variant);
}

.carousel-btn--next {
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: var(--shadow-md);
}

.carousel-btn--next:hover {
  background: var(--tertiary-container);
}

/* Carousel Wrapper */
.carousel-viewport {
  overflow: hidden;
  position: relative;
}

.carousel-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.carousel-slide {
  min-width: 100%;
  flex-shrink: 0;
}

/* Case Study Card */
.case-card {
  display: flex;
  flex-direction: column;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  width: 100%;
}

@media (min-width: 768px) {
  .case-card {
    flex-direction: row;
    align-items: flex-start; /* Don't force the image to stretch to text height */
    background: #fff;
  }
}

/* --- Image Slider --- */
.image-slider {
  width: 100%;
  aspect-ratio: 16 / 8; /* Wider and shorter landscape ratio on mobile */
  position: relative;
  background: var(--surface-container-low);
  padding: 30px; /* Framing padding */
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

@media (min-width: 768px) {
  .image-slider {
    width: 60%;
    aspect-ratio: 16 / 8; /* Maintain shorter landscape ratio on desktop */
    border-right: 1px solid var(--outline-variant);
    border-bottom: none;
    align-self: stretch;
  }
}

.image-slider__slide {
  position: absolute;
  top: 40px;
  left: 40px;
  right: 40px;
  bottom: 40px;
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
  border: 1px solid var(--outline-variant);
  box-shadow: var(--shadow-md);
  background: #fff;
}

.image-slider__slide.active {
  opacity: 1;
}

.image-slider__slide img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* Show the full landscape image without stretching or cropping */
  background: #fff; /* White background for the screenshot itself */
}

.image-slider__dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.image-slider__dot {
  width: 10px;
  height: 10px;
  border: 1px solid var(--outline);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.image-slider__dot.active {
  background: var(--primary);
  border-color: var(--primary);
}

/* --- Case Study Content --- */
.case-content {
  width: 100%;
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  background: #fff;
}

@media (min-width: 768px) {
  .case-content {
    width: 45%;
  }
}

.case-content__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.case-content__header {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.case-content__label {
  color: var(--on-surface-variant);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.case-content__business {
  color: var(--primary);
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
}

.case-content__location {
  color: var(--outline);
  font-size: 16px;
}

.case-meta {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.case-meta__tag {
  background: #edf3ff; /* Light blue/gray from screenshot */
  padding: 10px 16px;
  border: 1px solid #d1e1ff;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
}

.case-meta__tag .material-symbols-outlined {
  font-size: 20px;
  color: #5683d3;
}

.case-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.case-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.case-section-title {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--on-surface-variant);
  text-transform: uppercase;
}

.case-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 0;
  border-left: none;
}

.case-list li {
  color: var(--on-surface);
  font-size: 16px;
  line-height: 1.4;
  position: relative;
  padding-left: 12px;
}

.case-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--outline);
}

.case-results-box {
  background: #191c1e;
  padding: 24px 32px 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: auto;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.case-results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.case-results-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #a1a3a7;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.case-results-badge .material-symbols-outlined {
  font-size: 16px;
  color: var(--secondary-container);
}

.case-results-metrics-chips {
  display: flex;
  gap: 8px;
}

.metric-chip {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 4px 10px;
  border-radius: 4px;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
}

.case-results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-result-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.case-result-value-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.case-result-value {
  color: #fff;
  font-size: 32px;
  font-weight: 800;
  font-family: 'Inter', sans-serif;
  line-height: 1;
}

.icon-up {
  color: #4ade80; /* Success green */
  font-size: 24px !important;
}

.icon-rank {
  color: #facc15; /* Star yellow */
  font-size: 24px !important;
}

.case-result-label {
  color: #a1a3a7;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
}

.case-results-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
}

.case-results-footer .material-symbols-outlined {
  font-size: 20px;
  color: var(--secondary-container);
}

/* ============================================================
   PAIN POINTS & SOLUTION (Two Column)
   ============================================================ */
.problem-solution {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
}

@media (min-width: 768px) {
  .problem-solution {
    grid-template-columns: 1fr 1fr;
  }
}

/* Pain Points Card */
.pain-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--error-container);
  padding: 32px;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: var(--stack-sm);
  position: relative;
  overflow: hidden;
}

.pain-card__decor {
  position: absolute;
  top: -32px;
  right: -32px;
  width: 128px;
  height: 128px;
  background: var(--error-container);
  opacity: 0.2;
  border-radius: 0 0 0 100%;
}

.pain-card__title {
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pain-card__icon {
  color: var(--error);
  font-size: 28px;
}

.pain-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 8px;
}

.pain-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 18px;
  color: var(--on-surface-variant);
  line-height: 1.5;
}

.pain-list li .icon-x {
  color: var(--error);
  font-size: 22px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Solution Card */
.solution-card {
  background: var(--primary);
  color: var(--on-primary);
  padding: 32px;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: var(--stack-sm);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.solution-card__decor {
  position: absolute;
  top: -32px;
  right: -32px;
  width: 128px;
  height: 128px;
  background: var(--tertiary-fixed);
  opacity: 0.08;
  border-radius: 0 0 0 100%;
}

.solution-card__title {
  color: var(--on-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.solution-card__icon {
  color: var(--secondary-container);
  font-size: 28px;
}

.solution-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 8px;
}

.solution-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 18px;
  color: var(--on-primary);
  line-height: 1.5;
}

.solution-list li .icon-check {
  color: var(--secondary-container);
  font-size: 22px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ============================================================
   OFFER / FINAL CTA SECTION
   ============================================================ */
.cta-section {
  background: var(--surface-container-high);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  padding: 48px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--stack-md);
}

@media (min-width: 768px) {
  .cta-section {
    padding: 64px 48px;
  }
}

.cta-section__text {
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cta-section__title {
  color: var(--primary);
}

.cta-section__subtitle {
  color: var(--on-surface-variant);
  font-size: 18px;
  line-height: 1.6;
}

/* Form */
.audit-form {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--surface-container-lowest);
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--outline-variant);
  box-shadow: var(--shadow-sm);
  text-align: left;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
}

.form-group input {
  width: 100%;
  height: 52px;
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  padding: 0 16px;
  font-size: 15px;
  color: var(--primary);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.08);
}

.form-group input::placeholder {
  color: var(--outline);
}

.btn-submit {
  margin-top: 8px;
  width: 100%;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--secondary-container);
  color: var(--on-secondary);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border-top: 1px solid var(--secondary);
  box-shadow: 0 10px 30px -10px rgba(253, 118, 26, 0.5);
  transition: all 0.25s ease;
}

.btn-submit:hover {
  background: var(--secondary);
  box-shadow: 0 15px 40px -10px rgba(253, 118, 26, 0.65);
  transform: translateY(-2px);
}

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

/* ============================================================
   MATERIAL SYMBOLS
   ============================================================ */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
}

/* ============================================================
   CAROUSEL INDICATORS (bottom of section)
   ============================================================ */
.carousel-indicators {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}

.carousel-indicator {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--outline-variant);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

.carousel-indicator.active {
  background: var(--primary);
  width: 32px;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

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

.animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* Staggered delays for proof cards */
.proof-card:nth-child(1) {
  animation-delay: 0s;
}

.proof-card:nth-child(2) {
  animation-delay: 0.1s;
}

.proof-card:nth-child(3) {
  animation-delay: 0.2s;
}

.proof-card:nth-child(4) {
  animation-delay: 0.3s;
}

/* ============================================================
   TOUCH / SWIPE SUPPORT
   ============================================================ */
.carousel-viewport {
  touch-action: pan-y;
  -webkit-overflow-scrolling: touch;
}

/* ============================================================
   MOBILE REFINEMENTS
   ============================================================ */
@media (max-width: 480px) {
  :root {
    --section-padding: 64px;
    --gutter: 20px;
  }

  .case-content {
    padding: 20px 16px;
  }

  .cta-section {
    padding: 32px 16px;
  }

  .pain-card,
  .solution-card {
    padding: 24px;
  }

  .pain-list li,
  .solution-list li {
    font-size: 16px;
  }

  .carousel-btn {
    width: 40px;
    height: 40px;
  }
}