/* ============================================
   DYREES — Design System & Styles
   Theme: Warm Charcoal + Gold
   ============================================ */

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

/* ============================================
   THEME: Warm Charcoal + Gold
   ============================================ */
:root {
  --bg-primary:      #1C1917;
  --bg-secondary:    #292524;
  --bg-card:         rgba(41, 37, 36, 0.7);
  --bg-card-hover:   rgba(68, 64, 60, 0.8);
  --bg-nav:          rgba(28, 25, 23, 0.9);

  --accent-start:    #F59E0B;
  --accent-end:      #EF4444;
  --accent-mid:      #F97316;

  --text-primary:    #FAFAF9;
  --text-secondary:  #A8A29E;
  --text-muted:      #78716C;

  --border-card:     rgba(245, 158, 11, 0.15);
  --glow:            rgba(245, 158, 11, 0.25);

  --cal-bg:          rgba(41, 37, 36, 0.95);
  --cal-border:      rgba(245, 158, 11, 0.3);
  --cal-text:        rgba(250, 250, 249, 0.7);
  --cal-header:      rgba(245, 158, 11, 0.9);
  --cal-day-label:   rgba(245, 158, 11, 0.6);
  --cal-glow:        rgba(245, 158, 11, 0.15);

  --bg-glow1:        rgba(245, 158, 11, 0.06);
  --bg-glow2:        rgba(239, 68, 68, 0.05);

  --btn-text:        #1C1917;
  --overlay-top:     rgba(28, 25, 23, 0.7);
  --overlay-mid:     rgba(28, 25, 23, 0.5);
  --overlay-bottom:  rgba(28, 25, 23, 0.85);

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --section-pad:  6rem 1.5rem;
  --card-pad:     2rem;
  --radius:       16px;
  --radius-sm:    10px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration: 0.5s;
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background 0.5s, color 0.5s;
}

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

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

ul { list-style: none; }

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ---------- Background Decoration ---------- */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse 600px 600px at 20% 20%, var(--bg-glow1), transparent),
    radial-gradient(ellipse 500px 500px at 80% 80%, var(--bg-glow2), transparent);
  pointer-events: none;
  z-index: 0;
  transition: background 0.5s;
}



/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: background var(--duration) var(--ease-out),
              box-shadow var(--duration) var(--ease-out),
              padding var(--duration) var(--ease-out);
}

.nav.scrolled {
  background: var(--bg-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border-card);
  padding: 0.6rem 0;
}

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

.nav__logo {
  height: 36px;
  width: auto;
}



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

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s;
  position: relative;
}

.nav__link:hover {
  color: var(--text-primary);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
  border-radius: 2px;
  transition: width 0.3s var(--ease-out);
}

.nav__link:hover::after {
  width: 100%;
}

/* CTA button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--btn-text);
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.3s var(--ease-out),
              box-shadow 0.3s var(--ease-out);
  position: relative;
  z-index: 1;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--glow);
}

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

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-card);
  backdrop-filter: blur(8px);
}

.btn--outline:hover {
  border-color: var(--accent-start);
  background: var(--bg-glow1);
}

.btn--lg {
  padding: 0.9rem 2.2rem;
  font-size: 1rem;
}

/* Mobile hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav__hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 1.5rem 4rem;
  z-index: 1;
  background: url('../assets/hero-bg.png') center center / cover no-repeat;
}

/* Dark overlay for text readability */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    var(--overlay-top) 0%,
    var(--overlay-mid) 50%,
    var(--overlay-bottom) 100%
  );
  z-index: 0;
  transition: background 0.5s;
}

.hero__content {
  position: relative;
  z-index: 3;
  max-width: 800px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-start);
  background: var(--bg-glow1);
  border: 1px solid var(--border-card);
  border-radius: 50px;
  margin-bottom: 2rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.hero__title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Animated glow orb behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--bg-glow1) 0%, transparent 70%);
  pointer-events: none;
  animation: pulse-glow 6s ease-in-out infinite alternate;
  z-index: 0;
}

@keyframes pulse-glow {
  0%   { opacity: 0.5; transform: translateX(-50%) scale(1); }
  100% { opacity: 1;   transform: translateX(-50%) scale(1.15); }
}

/* ---------- Floating Calendar Blocks (3D) ---------- */
.hero__calendars {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 1;
  pointer-events: none;
  perspective: 1200px;
  perspective-origin: 50% 50%;
}

.cal-block {
  position: absolute;
  padding: 12px 14px;
  border-radius: 8px;
  background:
    linear-gradient(
      var(--grad-angle, 145deg),
      rgba(255,255,255,0.12) 0%,
      transparent 45%,
      rgba(0,0,0,0.18) 100%
    ),
    var(--cal-bg);
  border: 1px solid var(--cal-border);
  font-family: var(--font-sans);
  color: var(--cal-text);

  /* 3D tile depth: shadows based on tile position relative to light */
  box-shadow:
    /* Tile edge thickness — direction varies per tile */
    var(--edge-x, 2px) var(--edge-y, 2px) 0 0 var(--cal-border),
    calc(var(--edge-x, 2px) * 2) calc(var(--edge-y, 2px) * 2) 0 0 var(--cal-border),
    calc(var(--edge-x, 2px) * 3) calc(var(--edge-y, 2px) * 3) 0 0 var(--cal-border),
    /* Drop shadow — direction follows position */
    var(--sx, 4px) var(--sy, 8px) 20px rgba(0,0,0,0.35),
    calc(var(--sx, 4px) * 1.5) calc(var(--sy, 8px) * 1.5) 40px rgba(0,0,0,0.15),
    /* Top surface highlight */
    inset 0 1px 0 rgba(255,255,255,0.12),
    inset 1px 0 0 rgba(255,255,255,0.06);

  transform-style: preserve-3d;
  will-change: transform, opacity;
  animation: calFlyBack linear forwards;
}

.cal-block__header {
  font-size: 9px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 5px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-card);
  color: var(--cal-header);
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.cal-block__days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  margin-bottom: 3px;
}

.cal-block__days span {
  font-size: 5.5px;
  font-weight: 700;
  text-align: center;
  color: var(--cal-day-label);
  padding: 1px 0;
}

.cal-block__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
}

.cal-block__grid span {
  font-size: 6.5px;
  font-weight: 500;
  text-align: center;
  padding: 2px 1px;
  border-radius: 2px;
  min-width: 14px;
  line-height: 1.3;
}

.cal-block__today {
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end)) !important;
  color: var(--btn-text) !important;
  font-weight: 700 !important;
  border-radius: 50% !important;
  aspect-ratio: 1;
  display: flex !important;
  align-items: center;
  justify-content: center;
}

/* Fly from foreground toward a vanishing point */
@keyframes calFlyBack {
  0% {
    opacity: 0;
    transform: translateZ(400px) rotateY(var(--ry)) rotateX(var(--rx)) scale(1.3);
  }
  8% {
    opacity: 0.95;
  }
  60% {
    opacity: 0.8;
  }
  85% {
    opacity: 0.35;
  }
  100% {
    opacity: 0;
    transform: translateZ(-800px) rotateY(var(--ry)) rotateX(var(--rx)) scale(0.3);
  }
}

/* ============================================
   FEATURES
   ============================================ */
.features {
  position: relative;
  padding: var(--section-pad);
  z-index: 1;
}

.features__header {
  text-align: center;
  margin-bottom: 4rem;
}

.features__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.features__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 550px;
  margin: 0 auto;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* Second row centred with 3 cards */
.features__grid .feature-card:nth-child(5) {
  grid-column: 1 / 2;
}

/* Centre the bottom row of 3 */
@media (min-width: 1025px) {
  .features__grid {
    grid-template-columns: repeat(12, 1fr);
  }
  .features__grid .feature-card:nth-child(1) { grid-column: 1 / 4; }
  .features__grid .feature-card:nth-child(2) { grid-column: 4 / 7; }
  .features__grid .feature-card:nth-child(3) { grid-column: 7 / 10; }
  .features__grid .feature-card:nth-child(4) { grid-column: 10 / 13; }
  .features__grid .feature-card:nth-child(5) { grid-column: 2 / 5; }
  .features__grid .feature-card:nth-child(6) { grid-column: 5 / 9; }
  .features__grid .feature-card:nth-child(7) { grid-column: 9 / 12; }
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: var(--card-pad);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--duration) var(--ease-out),
              border-color var(--duration),
              box-shadow var(--duration),
              background 0.5s;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}

.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.7s var(--ease-out),
              transform 0.7s var(--ease-out),
              border-color var(--duration),
              box-shadow var(--duration);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-start);
  box-shadow: 0 16px 48px var(--glow);
}

/* Top glow line on card */
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-start), var(--accent-end), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--bg-glow1);
  border: 1px solid var(--border-card);
  margin-bottom: 1.25rem;
  color: var(--accent-start);
  transition: background 0.5s, border-color 0.5s;
}

.feature-card__icon svg {
  width: 28px;
  height: 28px;
}

.feature-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.feature-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   CTA / BETA FORM SECTION
   ============================================ */
.cta {
  position: relative;
  padding: var(--section-pad);
  z-index: 1;
  background: url('../assets/register-bg.png') center center / cover no-repeat;
  overflow: hidden;
}

/* Dark overlay for readability */
.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    var(--overlay-bottom) 0%,
    rgba(0,0,0,0.85) 40%,
    var(--overlay-bottom) 100%
  );
  z-index: 0;
  transition: background 0.5s;
}

.cta__inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 3rem 2.5rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
  transition: background 0.5s, border-color 0.5s;
}

.cta__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.cta__subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form__label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.5s;
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--accent-start);
  box-shadow: 0 0 0 3px var(--bg-glow1);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--text-muted);
}

.form__textarea {
  resize: vertical;
  min-height: 100px;
}

.form__submit {
  margin-top: 0.5rem;
  align-self: flex-start;
}

.form__status {
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 0.5rem;
}

.form__status--success {
  color: var(--accent-end);
}

.form__status--error {
  color: hsl(0, 80%, 60%);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  position: relative;
  z-index: 1;
  padding: 3rem 1.5rem;
  border-top: 1px solid var(--border-card);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__logo {
  height: 28px;
  width: auto;
  opacity: 0.6;
}

.footer__copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features__grid .feature-card:nth-child(5),
  .features__grid .feature-card:nth-child(6),
  .features__grid .feature-card:nth-child(7) {
    grid-column: auto;
  }
  .features__grid .feature-card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    max-width: 400px;
    justify-self: center;
  }
}

@media (max-width: 768px) {
  :root {
    --section-pad: 4rem 1.25rem;
    --card-pad: 1.5rem;
  }
  .nav__links {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    padding: 6rem 2rem 2rem;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-card);
    transform: translateX(100%);
    transition: transform 0.4s var(--ease-out);
    gap: 1.5rem;
    z-index: 1000;
  }
  .nav__links.open {
    transform: translateX(0);
  }
  .nav__hamburger {
    display: flex;
  }
  .features__grid {
    grid-template-columns: 1fr;
  }
  .features__grid .feature-card:last-child:nth-child(odd) {
    max-width: none;
  }
  .form__row {
    grid-template-columns: 1fr;
  }
  .hero {
    min-height: auto;
    padding: 8rem 1.25rem 4rem;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero__badge,
.hero__title,
.hero__subtitle,
.hero__actions {
  animation: fade-up 0.8s var(--ease-out) backwards;
}

.hero__badge   { animation-delay: 0.1s; }
.hero__title   { animation-delay: 0.25s; }
.hero__subtitle { animation-delay: 0.4s; }
.hero__actions { animation-delay: 0.55s; }

/* Stagger feature cards */
.feature-card:nth-child(1) { transition-delay: 0.05s; }
.feature-card:nth-child(2) { transition-delay: 0.12s; }
.feature-card:nth-child(3) { transition-delay: 0.19s; }
.feature-card:nth-child(4) { transition-delay: 0.26s; }
.feature-card:nth-child(5) { transition-delay: 0.33s; }
.feature-card:nth-child(6) { transition-delay: 0.4s; }
.feature-card:nth-child(7) { transition-delay: 0.47s; }