/* =========================================================
   PTFE ABOUT / STORY PAGE CSS
   Cleaned for current about.php
========================================================= */

/* =========================
   1. Root Variables
========================= */
:root {
  --brand-blue: #123d73;
  --brand-blue-dark: #0e315c;
  --brand-cyan: #1496be;
  --brand-orange: #1B9CEB;
  --text: #1f2937;
  --muted: #667085;
  --border: #e6e8ec;
  --soft: #f5f7fb;
  --white: #ffffff;
  --shadow: 0 16px 40px rgba(15, 23, 42, 0.08);
  --radius: 22px;
}

/* =========================
   2. Base Page
========================= */
.about-page,
.ptfe-story-page {
  background:
    radial-gradient(circle at top right, rgba(27, 156, 235, 0.10), transparent 26%),
    radial-gradient(circle at left center, rgba(18, 61, 115, 0.08), transparent 22%),
    linear-gradient(180deg, #f6fbff 0%, #ffffff 24%, #f7fbff 100%);
  color: var(--text);
  overflow: hidden;
}

.about-container {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
}

.section-space {
  padding: 90px 0;
}

.section-soft {
  background: linear-gradient(180deg, #eef7ff 0%, #f8fbff 100%);
}

/* =========================
   3. Common Elements
========================= */
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--brand-cyan);
  margin-bottom: 14px;
  position: relative;
}

.section-tag::after {
  content: "";
  display: block;
  width: 120px;
  height: 2px;
  background: var(--brand-cyan);
  margin-top: 4px;
}

.btn-main,
.video-btn,
.ptfe-story-outline-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 50px;
  padding: 12px 24px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  transition: 0.3s ease;
}

.btn-main,
.video-btn {
  background: var(--brand-orange);
  color: #fff;
  box-shadow: 0 14px 26px rgba(31, 210, 246, 0.24);
}

.btn-main:hover,
.video-btn:hover {
  background: #fff;
  color: var(--brand-orange);
  transform: translateY(-2px);
}

.ptfe-story-outline-btn {
  background: #fff;
  color: var(--brand-blue);
  border: 1px solid rgba(18, 61, 115, 0.14);
  box-shadow: 0 14px 28px rgba(8, 33, 61, 0.06);
}

.ptfe-story-outline-btn:hover {
  background: var(--brand-blue);
  color: #fff;
  border-color: var(--brand-blue);
  transform: translateY(-2px);
}

/* =========================
   4. Reveal Animation
========================= */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

/* =========================
   5. Video Section
========================= */
.video-section {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.video-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

.custom-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: rgba(41, 41, 41, 0.35);
  z-index: 1;
}

.video-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(900px, calc(100% - 30px));
  color: #fff;
  z-index: 2;
  text-align: center;
}

.video-content h1 {
  font-size: 68px;
  font-weight: 800;
  margin: 0 0 15px;
  color: #fff;
  line-height: 1.1;
}

.sub-text {
  font-size: 18px;
  margin: 0 0 20px;
  line-height: 1.7;
  color: #fff;
}

/* =========================
   6. PTFE Story Hero
========================= */
.ptfe-story-hero {
  position: relative;
  padding: 40px 0 32px;
  overflow: hidden;
}

.ptfe-story-hero::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  right: -190px;
  top: -180px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(27, 156, 235, 0.18), rgba(18, 61, 115, 0.05));
}

.ptfe-story-hero-grid,
.ptfe-story-origin-layout,
.ptfe-story-definition-grid,
.ptfe-story-app-grid,
.ptfe-story-value-wrap,
.ptfe-story-expertise-grid {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 34px;
  align-items: center;
  position: relative;
  z-index: 1;
}

/* =========================
   7. Metrics Row
========================= */
.ptfe-story-metric-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  width: 100%;
  margin: 0 auto;
}

.ptfe-story-metric-card {
  padding: 22px 20px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #f3f9ff 100%);
  border: 1px solid rgba(18, 61, 115, 0.10);
  box-shadow: 0 12px 28px rgba(7, 31, 58, 0.05);
  text-align: center;
}

.metric-number {
  display: block;
  color: #0e467f;
  font-size: 30px;
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 10px;
}

.metric-label {
  color: #55697d;
  font-size: 14px;
  line-height: 1.7;
  font-weight: 600;
}

/* =========================
   8. Section Headings
========================= */
.ptfe-story-section-head {
  max-width: 860px;
  margin: 0 0 10px;
}

.ptfe-story-section-head.center {
  text-align: center;
  margin: 0 auto 28px;
}

.ptfe-story-section-head h2 {
  margin: 0;
  color: #08284d;
  font-size: 44px;
  line-height: 1.15;
  font-weight: 800;
}

.ptfe-story-section-head p {
  margin: 14px auto 0;
  color: #587085;
  line-height: 1.9;
  font-size: 16px;
  max-width: 760px;
}

/* =========================
   9. Text Blocks
========================= */
.ptfe-story-origin-copy p,
.ptfe-story-definition-card p,
.ptfe-story-app-copy p,
.ptfe-story-value-copy p,
.ptfe-story-expertise-copy p,
.ptfe-story-commitment-copy p {
  margin: 0 0 16px;
  color: #4f6278;
  line-height: 1.95;
  font-size: 16px;
}

/* =========================
   10. Cards Common
========================= */
.ptfe-story-definition-card,
.ptfe-story-origin-timeline,
.ptfe-story-app-card,
.ptfe-story-benefit-block,
.ptfe-story-expertise-panel,
.ptfe-story-commitment-box,
.ptfe-story-faq-card {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(18, 61, 115, 0.10);
  border-radius: 28px;
  box-shadow: 0 24px 56px rgba(7, 31, 58, 0.08);
}

/* =========================
   11. Timeline
========================= */
.ptfe-story-origin-timeline {
  padding: 26px;
  display: grid;
  gap: 18px;
}

.ptfe-story-timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(18, 61, 115, 0.08);
}

.ptfe-story-timeline-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.ptfe-story-timeline-item span {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #123d73 0%, #1B9CEB 100%);
  color: #fff;
  font-weight: 800;
}

.ptfe-story-timeline-item h3,
.ptfe-story-definition-list h3,
.ptfe-story-app-card h3,
.ptfe-story-benefit-block h3,
.ptfe-story-faq-card h3 {
  margin: 0 0 8px;
  color: #08284d;
  font-size: 22px;
  line-height: 1.3;
  font-weight: 800;
}

.ptfe-story-timeline-item p,
.ptfe-story-definition-list p,
.ptfe-story-app-card p,
.ptfe-story-benefit-block p,
.ptfe-story-faq-card p,
.ptfe-story-expertise-panel span {
  margin: 0;
  color: #54697d;
  font-size: 15px;
  line-height: 1.85;
}

/* =========================
   12. Definition Section
========================= */
.ptfe-story-definition-card {
  padding: 34px;
}

.ptfe-story-definition-card h2,
.ptfe-story-app-copy h2,
.ptfe-story-value-copy h2,
.ptfe-story-expertise-copy h2,
.ptfe-story-commitment-copy h2 {
  margin: 0 0 16px;
  color: #08284d;
  font-size: 42px;
  line-height: 1.15;
  font-weight: 800;
}

.ptfe-story-definition-list {
  display: grid;
  gap: 16px;
}

.ptfe-story-definition-list article {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 22px;
  border-radius: 22px;
  background: #fff;
  border: 1px solid rgba(18, 61, 115, 0.10);
  box-shadow: 0 14px 30px rgba(7, 31, 58, 0.05);
}

.ptfe-story-definition-list i {
  color: #1B9CEB;
  font-size: 22px;
  margin-top: 4px;
}

/* =========================
   13. Benefits Section
========================= */
.ptfe-story-benefit-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.ptfe-story-benefit-block {
  padding: 30px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
}

.ptfe-story-benefit-block.alt {
  transform: translateY(24px);
}

.benefit-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: linear-gradient(135deg, #123d73 0%, #1B9CEB 100%);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 18px;
}

/* =========================
   14. Applications Section
========================= */
.ptfe-story-app-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.ptfe-story-app-card {
  padding: 24px;
  min-height: 100%;
}

/* =========================
   15. Value Section
========================= */
.ptfe-story-value-visual img {
  width: 100%;
  min-height: 480px;
  object-fit: cover;
  display: block;
  border-radius: 30px;
  box-shadow: 0 24px 56px rgba(7, 31, 58, 0.10);
}

.ptfe-story-value-list {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.ptfe-story-value-list div {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: #3d5770;
  font-weight: 600;
  line-height: 1.8;
}

.ptfe-story-value-list i {
  color: #1B9CEB;
  margin-top: 5px;
}

/* =========================
   16. Expertise Section
========================= */
.ptfe-story-expertise-panel {
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  overflow: hidden;
  background: rgba(18, 61, 115, 0.08);
}

.ptfe-story-expertise-panel article {
  background: #fff;
  padding: 28px 24px;
}

.ptfe-story-expertise-panel strong {
  display: block;
  color: #0d477f;
  font-size: 28px;
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 8px;
}

/* =========================
   17. Commitment Section
========================= */
.ptfe-story-commitment-box {
  padding: 38px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(18, 61, 115, 0.98) 0%, rgba(27, 156, 235, 0.98) 100%),
    url('assets/img/images/PTFE_NON-STICK COATING ON ROLLER.png') center/cover no-repeat;
}

.ptfe-story-commitment-copy h2,
.ptfe-story-commitment-copy p,
.ptfe-story-commitment-box .ptfe-story-eyebrow {
  color: #fff;
}

.ptfe-story-eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.ptfe-story-commitment-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* =========================
   18. FAQ
========================= */
.ptfe-story-faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.ptfe-story-faq-card {
  padding: 28px;
}

/* =========================
   19. Responsive
========================= */
@media (max-width: 1199.98px) {
  .video-content h1 {
    font-size: 54px;
  }

  .ptfe-story-section-head h2,
  .ptfe-story-definition-card h2,
  .ptfe-story-app-copy h2,
  .ptfe-story-value-copy h2,
  .ptfe-story-expertise-copy h2,
  .ptfe-story-commitment-copy h2 {
    font-size: 36px;
  }

  .ptfe-story-metric-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 991.98px) {
  .section-space {
    padding: 60px 0;
  }

  .video-section {
    height: auto;
  }

  .video-wrapper {
    height: 420px;
  }

  .video-content h1 {
    font-size: 44px;
  }

  .ptfe-story-hero-grid,
  .ptfe-story-origin-layout,
  .ptfe-story-definition-grid,
  .ptfe-story-app-grid,
  .ptfe-story-value-wrap,
  .ptfe-story-expertise-grid,
  .ptfe-story-commitment-box {
    grid-template-columns: 1fr;
  }

  .ptfe-story-faq-grid,
  .ptfe-story-app-cards,
  .ptfe-story-benefit-matrix,
  .ptfe-story-expertise-panel,
  .ptfe-story-metric-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .ptfe-story-benefit-block.alt {
    transform: none;
  }
}

@media (max-width: 767.98px) {
  .section-space {
    padding: 45px 0;
  }

  .video-wrapper {
    height: 360px;
  }

  .video-content {
    width: calc(100% - 24px);
  }

  .video-content h1 {
    font-size: 28px;
  }

  .sub-text {
    font-size: 14px;
  }

  .ptfe-story-section-head h2,
  .ptfe-story-definition-card h2,
  .ptfe-story-app-copy h2,
  .ptfe-story-value-copy h2,
  .ptfe-story-expertise-copy h2,
  .ptfe-story-commitment-copy h2 {
    font-size: 28px;
  }

  .ptfe-story-metric-row,
  .ptfe-story-benefit-matrix,
  .ptfe-story-app-cards,
  .ptfe-story-faq-grid,
  .ptfe-story-expertise-panel {
    grid-template-columns: 1fr;
  }

  .ptfe-story-definition-card,
  .ptfe-story-origin-timeline,
  .ptfe-story-benefit-block,
  .ptfe-story-app-card,
  .ptfe-story-faq-card,
  .ptfe-story-commitment-box {
    padding: 22px;
    border-radius: 22px;
  }

  .ptfe-story-value-visual img {
    min-height: auto;
    height: auto;
  }

  .ptfe-story-commitment-actions {
    flex-direction: column;
  }

  .ptfe-story-commitment-actions a {
    width: 100%;
  }
}