/* =======================================================
   SWPT LANDING PAGE STYLES
   - Storm Water Pollution Tracker
   - Responsive, token-based, flex-wrap layouts
   ======================================================= */

/* ---------------------------------------
   1. DESIGN TOKENS (COLORS, TYPE, SPACING)
---------------------------------------- */

:root {
  /* Brand Colors */
  --swpt-azure: #0068E7;
  --swpt-azure-dark: #0055c3;
  --swpt-slate: #214156;
  --swpt-slate-dark: #1e2835;
  --swpt-card-bg: #26394d;
  --swpt-text-light: #ffffff;
  --swpt-text-muted: #dbe7f2;

  /* Radii */
  --swpt-radius-sm: 5px;
  --swpt-radius-md: 10px;
  --swpt-radius-lg: 20px;
  --swpt-radius-xl: 30px;

  /* Shadows */
  --swpt-shadow-soft: 0 2px 10px rgba(0, 0, 0, 0.25);
  --swpt-shadow-med: 0 4px 12px rgba(0, 0, 0, 0.25);
  --swpt-shadow-strong: 0 8px 24px rgba(0, 0, 0, 0.45);

  /* Layout */
  --swpt-max-width: 1100px;
  --swpt-page-padding-x: clamp(16px, 4vw, 64px);
  --swpt-section-padding-y: clamp(48px, 6vw, 72px);
  --swpt-header-height: 70px;

  /* Typography scale (fluid) */
  /*--swpt-font-body: clamp(min, fluid, max)*/
  --swpt-font-body: clamp(0.95rem, 0.3vw + 0.9rem, 1.05rem);
  --swpt-font-body-sm: clamp(0.85rem, 0.3vw + 0.75rem, 0.98rem);
  --swpt-font-h1: clamp(2.4rem, 2.5vw + 1.8rem, 3.4rem);
  --swpt-font-h2: clamp(1.8rem, 1.8vw + 1.4rem, 2.6rem);
  --swpt-font-h3: clamp(1.3rem, 1.3vw + 1.1rem, 1.7rem);
  --swpt-font-hero-title: clamp(1.3rem, 1.4vw + 0.9rem, 3.2rem);
  --swpt-font-hero-sub: clamp(0.9rem, 1.0vw + 0.8rem, 1.6rem);
  --swpt-font-section-title: clamp(1.9rem, 1.6vw + 1.5rem, 2.4rem);
  --swpt-font-impact: clamp(1.3rem, 1.4vw + 1.1rem, 1.9rem);

  /* Line heights */
  --swpt-lh-tight: 1.2;
  --swpt-lh-normal: 1.5;
  --swpt-lh-relaxed: 1.6;
}

/* ---------------------------------------
   2. GLOBAL BASE / RESET
---------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

body {
  background-color: var(--swpt-slate);
  font-family: "Montserrat", sans-serif;
  font-size: var(--swpt-font-body);
  line-height: var(--swpt-lh-normal);
  color: var(--swpt-text-light);
}

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

h1,
h2,
h3 {
  margin: 0 0 0.5em;
  font-weight: 600;
  color: var(--swpt-text-light);
}

h1 {
  font-size: var(--swpt-font-h1);
}

h2 {
  font-size: var(--swpt-font-h2);
}

h3 {
  font-size: var(--swpt-font-h3);
}

p {
  margin: 0 0 0.75em;
  font-size: var(--swpt-font-body);
}

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

/* Utility container (if needed later) */
.swpt-container {
  width: min(var(--swpt-max-width), 100% - 2 * var(--swpt-page-padding-x));
  margin: 0 auto;
}

/* ---------------------------------------
   3. HEADER
---------------------------------------- */

.home-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--swpt-header-height);
  background-color: var(--swpt-azure);
  color: var(--swpt-text-light);
  z-index: 1000;

  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(12px, 3vw, 24px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.home-header h1 {
  margin: 0;
  font-size: clamp(1.0rem, 1.1vw + 0.6rem, 1.6rem);
  font-weight: 550;
  display: flex;
  align-items: center;
  gap: 10px;
}

.home-link {
  text-decoration: none;
  color: var(--swpt-text-light);
  display: inline-flex;
  align-items: center;
}

.home-logo {
  height: clamp(48px, 4vh, 54px);
  width: auto;
  vertical-align: middle;
  margin-right: 4px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.home-logo:hover {
  transform: scale(1.02);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}

/* ============= MOBILE HEADER ============= */
@media (max-width: 650px) {
  /* Keep the H1 for the logo, but hide the text by shrinking its font */
  .home-header h1 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    font-size: 0;          /* hides the text node, NOT the image */
  }

  /* Center the logo */
  .home-logo {
    margin: 0;
    height: clamp(40px, 6vh, 52px);
  }

  /* Center things overall and leave room on the right for the back button */
  .home-header {
    justify-content: flex-start;
    padding-left: 16px;
    padding-right: 64px;   /* space where the back button sits */
  }

  /* Position the Back to Fathom button in the top-right of the header */
  .fixed-back-btn {
    position: fixed;       /* stays pinned in the viewport */
    top: 8px;
    right: 12px;
    margin: 0;
    padding: 8px 12px;
    font-size: clamp(0.8rem, 1vw + 0.6rem, 0.95rem);
  }
}


/* ---------------------------------------
   4. BUTTONS (PRIMARY / SECONDARY)
---------------------------------------- */

.primary {
  width: 80%;
  display: block;
  margin: 0 auto;
  font-size: clamp(0.95rem, 0.4vw + 0.9rem, 1rem);
  padding: 10px 20px;
  border: none;
  border-radius: var(--swpt-radius-sm);
  cursor: pointer;
  transition: background-color 0.3s, transform 0.15s, box-shadow 0.15s;
  background-color: var(--swpt-azure);
  color: var(--swpt-text-light);
  text-align: center;
  text-decoration: none;
}

.primary:hover {
  background: var(--swpt-azure-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}

a.primary {
  box-sizing: border-box;
}

.secondary {
  display: inline-block;
  padding: 8px 18px;
  margin-left: 10px;
  font-size: var(--swpt-font-body);
  color: var(--swpt-azure);
  background: #fff;
  border: 2px solid var(--swpt-azure);
  border-radius: var(--swpt-radius-sm);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.15s;
}

.secondary:hover {
  background: var(--swpt-azure);
  color: #fff;
  transform: translateY(-1px);
}

/* ---------------------------------------
   5. HERO SECTION
---------------------------------------- */

.hero-section {
  min-height: 100vh;
  padding-top: var(--swpt-header-height);

  background-image:
    linear-gradient(rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0.45)),
    url('/static/images/asphalt-background.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;

  display: flex;
  align-items: center;
  justify-content: center;
  padding-inline: var(--swpt-page-padding-x);
}

.hero-inner {
  text-align: center;
  max-width: 900px;
  background: rgba(245, 245, 245, 0.35);
  border-radius: var(--swpt-radius-xl);
  padding: clamp(24px, 4vw, 40px) clamp(20px, 4vw, 40px);
  box-shadow: var(--swpt-shadow-med);
  backdrop-filter: blur(4px);
}

.hero-title {
  font-size: var(--swpt-font-hero-title);
  font-weight: 750;
  color: #ffffff;
  margin-bottom: clamp(16px, 2vw, 22px);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.hero-subtitle {
  font-size: var(--swpt-font-hero-sub);
  font-weight: 450;
  color: #ffffff;
  line-height: var(--swpt-lh-relaxed);
  margin-bottom: clamp(32px, 4vw, 40px);
  max-width: 80%;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: clamp(12px, 2vw, 24px);
  flex-wrap: wrap; /* allow wrap only when truly needed */
}

/* Override the generic .primary styles in the hero context */
.hero-buttons .hero-btn {
  width: auto;
  margin: 0;
  display: inline-flex;
  justify-content: center;
}

.hero-btn {
  font-size: clamp(1.05rem, 0.7vw + 1rem, 1.35rem) !important;
  padding: clamp(12px, 1.5vw + 8px, 16px) clamp(24px, 2vw + 20px, 36px) !important;
  border-radius: var(--swpt-radius-md);
  font-weight: 600;
  letter-spacing: 0.04em;
  background-color: var(--swpt-azure);
  transition: 0.25s ease;
}

.hero-btn:hover {
  transform: translateY(-3px);
  background-color: var(--swpt-azure-dark);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

/* Hero responsive tweaks */
@media (max-width: 640px) {
  .hero-inner {
    padding-inline: clamp(16px, 4vw, 24px);
  }

  .hero-subtitle {
    max-width: 100%;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .primary.hero-btn {
    width: 100%;
  }
}


/* ---------------------------------------
   6. SECTION TITLES (WHY / MODULES / HOW)
---------------------------------------- */

.section-title {
  text-align: center;
  color: #ffffff;
  font-size: var(--swpt-font-section-title);
  margin-bottom: clamp(24px, 3vw, 35px);
}

/* ---------------------------------------
   7. WHY SECTION
---------------------------------------- */

.why-section {
  padding: var(--swpt-section-padding-y) var(--swpt-page-padding-x);
  background-color: var(--swpt-slate);
}

.why-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(20px, 3vw, 40px);
  margin: 0 auto;
  max-width: var(--swpt-max-width);
}

.why-card {
  flex: 1 1 clamp(300px, 30%, 400px);
  max-width: 500px;
  text-align: center;
}


.why-img {
  width: 100%;
  height: clamp(250px, 24vh, 400px);
  object-fit: cover;
  border-radius: var(--swpt-radius-md);
  box-shadow: var(--swpt-shadow-soft);
}

.why-text {
  color: #ffffff;
  margin-top: 12px;
  font-size: clamp(1rem, 0.3vw + 1rem, 1.10rem);
  line-height: var(--swpt-lh-relaxed);
  letter-spacing: 0.05em;
  text-align: left;
}

/* ---------------------------------------
   8. MODULES SECTION
---------------------------------------- */

.modules-section {
  padding: var(--swpt-section-padding-y) var(--swpt-page-padding-x);
  background-color: var(--swpt-slate-dark);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0.25)),
    url('/static/images/road-network-background.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.modules-section .section-title {
  color: var(--swpt-slate);
  background: rgba(255, 255, 255, 0.7);
  padding: 12px 20px;
  border-radius: 12px;
  max-width: 600px;
  margin: 0 auto clamp(28px, 4vw, 40px) auto;
}

.modules-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(20px, 3vw, 30px);
  margin: 0 auto;
  max-width: var(--swpt-max-width);
}

.module-card {
  flex: 1 1 clamp(260px, 30%, 340px);
  max-width: 340px;
  background: var(--swpt-card-bg);
  padding: clamp(20px, 3vw, 28px) 18px;
  border-radius: 12px;
  text-align: center;
  border: 2px solid var(--swpt-azure);
  box-shadow: var(--swpt-shadow-med);
  transition: transform 0.25s, box-shadow 0.25s;
}

.module-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
}

/* Icon wrapper */
.module-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

/* Icon image */
.module-icon-img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  display: inline-block;
}

/* Card heading */
.module-card h3 {
  color: #ffffff;
  font-size: clamp(1.15rem, 0.6vw + 1rem, 1.4rem);
  margin-bottom: 10px;
}

/* Card text */
.module-card p {
  max-width: 90%;
  margin-left: auto;
  margin-right: auto;
  color: var(--swpt-text-muted);
  font-size: clamp(0.95rem, 0.25vw + 0.9rem, 1.02rem);
  line-height: var(--swpt-lh-normal);
  letter-spacing: 0.04em;
  text-align: left;
  margin-bottom: 20px;
}

/* Module CTA button */
.module-button {
  width: 50%;
  min-width: 120px;
  display: block;
  margin: 0 auto;
  font-size: clamp(0.9rem, 0.3vw + 0.85rem, 1rem);
  font-weight: 600;
  padding: 7px 10px;
  border: none;
  border-radius: var(--swpt-radius-sm);
  cursor: pointer;
  transition: background-color 0.3s, transform 0.15s, box-shadow 0.15s;
  background-color: var(--swpt-azure);
  color: #ffffff;
  text-align: center;
  text-decoration: none;
}

.module-button:hover {
  background: var(--swpt-azure-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--swpt-shadow-soft);
}

/* ---------------------------------------
   9. HOW IT WORKS SECTION
---------------------------------------- */

.how-section {
  padding: var(--swpt-section-padding-y) var(--swpt-page-padding-x);
  background-color: var(--swpt-slate);
}

.how-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(20px, 3vw, 30px);
  margin: 0 auto;
  max-width: var(--swpt-max-width);
}

.how-step {
  flex: 1 1 clamp(260px, 30%, 340px);
  max-width: 320px;
  background: var(--swpt-card-bg);
  border-radius: 12px;
  border: 2px solid var(--swpt-azure);
  box-shadow: var(--swpt-shadow-med);
  padding: clamp(20px, 3vw, 28px) 18px;
  text-align: center;
}

.step-circle {
  width: 48px;
  height: 48px;
  background-color: var(--swpt-azure);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: clamp(1.1rem, 0.4vw + 1rem, 1.3rem);
  font-weight: 700;
  margin: 0 auto 14px auto;
}

.how-step h3 {
  color: #ffffff;
  font-size: clamp(1.1rem, 0.5vw + 1rem, 1.25rem);
  margin-bottom: 10px;
}

.how-step p {
  color: var(--swpt-text-muted);
  font-size: var(--swpt-font-body-sm);
  line-height: var(--swpt-lh-normal);
}

.how-note {
  margin-top: clamp(24px, 3vw, 32px);
  font-size: var(  --swpt-font-h3);
  color: white;
  text-align: center;
}

/* ---------------------------------------
   10. IMPACT SECTION
---------------------------------------- */

.impact-section {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.25)),
    url('/static/images/clean-water-background.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;

  padding: clamp(40px, 6vw, 60px) clamp(24px, 8vw, 80px);
  text-align: center;
  min-height: 40vh;

  display: flex;
  align-items: center;
  justify-content: center;
}

.impact-section p {
  color: #e1ecf2;
  font-size: var(--swpt-font-impact);
  font-weight: 600;
  line-height: var(--swpt-lh-relaxed);
  max-width: 700px;
  margin: 0 auto;
  text-align: justify;
}

/* On small screens, let it be more centered than justified */
@media (max-width: 640px) {
  .impact-section p {
    text-align: left;
  }
}

/* ---------------------------------------
   11. CONTACT SECTION
---------------------------------------- */

.contact-section {
    padding: 60px 20px;
    background: var(--swpt-slate-dark);
    text-align: center;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-row {
    display: flex;
    gap: 16px;
}

.contact-row input {
    flex: 1;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
}

.contact-form textarea {
    resize: vertical;
}

.contact-submit {
    padding: 12px 20px;
    font-size: 1.1rem;
    cursor: pointer;
}



/* ---------------------------------------
   12. MODAL SYSTEM
---------------------------------------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 1000;
}

.modal-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

/* Modal panel */
.modal-panel {
  position: fixed;
  left: 50%;
  bottom: -70%;
  transform: translateX(-50%);
  width: min(700px, 90%);
  max-height: 70vh;

  background: var(--swpt-slate-dark);
  border: 3px solid var(--swpt-azure);
  border-radius: 20px 20px 0 0;
  color: #ffffff;
  padding: 28px 24px 24px;
  box-shadow: var(--swpt-shadow-strong);
  z-index: 1001;

  display: flex;
  flex-direction: column;
  overflow-y: auto;
  transition: bottom 0.35s ease-out;
}

.modal-panel.show {
  bottom: 10%;
}

.swpt-modal-image {
  width: 100%;
  border-radius: 8px;
  margin-top: 18px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.2);
}

/* Close button */
.modal-close {
  position: absolute;
  top: 15px;
  left: 20px;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 2.2rem;
  font-weight: bold;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: transform 0.2s ease;
}

.modal-close:hover {
  transform: scale(1.15);
}

.modal-panel h2 {
  margin-top: 12px;
  margin-bottom: 12px;
  font-size: clamp(1.5rem, 1.2vw + 1.2rem, 2rem);
  color: #80b7ff;
  text-align: center;
}

.modal-panel p {
  font-size: clamp(1rem, 0.4vw + 0.95rem, 1.2rem);
  line-height: var(--swpt-lh-relaxed);
  margin-top: 8px;
}

/* On very small screens, let modal sit higher and be taller */
@media (max-width: 600px) {
  .modal-panel {
    bottom: -80%;
    max-height: 80vh;
    padding-inline: 18px;
  }

  .modal-panel.show {
    bottom: 5%;
  }
}

/* ---------------------------------------
   13. FOOTER & FIXED BACK BUTTON
---------------------------------------- */

.home-footer {
  text-align: center;
  padding: 20px;
  background-color: var(--swpt-azure);
  color: #ffffff;
  font-size: clamp(0.95rem, 0.3vw + 0.9rem, 1.1rem);
}

/* ================================ */
/*           SWPT FOOTER            */
/* ================================ */

.swpt-footer {
    background-color: var(--swpt-azure);
    color: #ffffff;
    padding: 20px 20px;
    font-size: clamp(0.95rem, 0.3vw + 0.9rem, 1.1rem);
}

.swpt-footer-inner {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.swpt-footer-brand img {
    width: 250px;
    margin-bottom: 10px;
    margin-left: auto;
    margin-right: auto;
}

.swpt-footer-brand p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 10px;
}

.swpt-footer-links {
    display: flex;
    justify-content: center;
    gap: 26px;
    margin-bottom: 20px;
}

.swpt-footer-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    transition: transform 0.2s ease, opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Ensure Lucide icons render in white inside SWPT footer */
.swpt-footer-icon svg {
    stroke: #ffffff !important;
    stroke-width: 1.5 !important;
    width: 30px;
    height: 30px;
}

.swpt-footer-icon:hover {
    transform: scale(1.15);
    opacity: 0.8;
}

.swpt-footer-copy {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-top: 10px;
}


.fixed-back-btn {
  position: fixed;
  right: 12px;
  top: 12px;
  z-index: 1100;
  background: var(--swpt-azure);
  color: #ffffff;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: clamp(0.72rem, 0.6vw + 0.6rem, 1rem);
  padding: clamp(6px, 0.7vw + 4px, 10px) clamp(10px, 1vw + 8px, 18px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: background 0.2s, transform 0.15s;
}

.fixed-back-btn:hover {
  background: var(--swpt-azure-dark);
  transform: translateY(-2px);
}


.fixed-back-btn:focus {
  outline: 3px solid rgba(0, 104, 231, 0.25);
  outline-offset: 2px;
}