/* ============================================
   VelocityTopUp — style.css
   Pure CSS, no Tailwind
   ============================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:wght@400;500;600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap');

/* ---------- CSS Variables ---------- */
:root {
  /* Colors */
  --primary:                  #0059bb;
  --primary-container:        #0070ea;
  --primary-fixed:            #d8e2ff;
  --primary-fixed-dim:        #adc7ff;
  --on-primary:               #ffffff;
  --on-primary-fixed:         #001a41;
  --on-primary-fixed-variant: #004493;
  --inverse-primary:          #adc7ff;

  --secondary:                #505f76;
  --secondary-container:      #d0e1fb;
  --secondary-fixed:          #d3e4fe;
  --secondary-fixed-dim:      #b7c8e1;
  --on-secondary:             #ffffff;
  --on-secondary-container:   #54647a;
  --on-secondary-fixed:       #0b1c30;
  --on-secondary-fixed-variant: #38485d;

  --tertiary:                 #9e3d00;
  --tertiary-container:       #c64f00;
  --tertiary-fixed:           #ffdbcc;
  --tertiary-fixed-dim:       #ffb695;
  --on-tertiary:              #ffffff;
  --on-tertiary-container:    #fffbff;
  --on-tertiary-fixed:        #351000;
  --on-tertiary-fixed-variant:#7c2e00;

  --background:               #f9f9ff;
  --on-background:            #181c23;
  --surface:                  #f9f9ff;
  --surface-dim:              #d7d9e5;
  --surface-bright:           #f9f9ff;
  --surface-variant:          #e0e2ed;
  --surface-tint:             #005bc0;
  --on-surface:               #181c23;
  --on-surface-variant:       #414754;

  --surface-container-lowest: #ffffff;
  --surface-container-low:    #f1f3fe;
  --surface-container:        #ebedf9;
  --surface-container-high:   #e6e8f3;
  --surface-container-highest:#e0e2ed;

  --inverse-surface:          #2d3039;
  --inverse-on-surface:       #eef0fb;

  --outline:                  #717786;
  --outline-variant:          #c1c6d7;

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

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-xxl: 48px;
  --space-mobile: 16px;

  --radius:    4px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 9999px;

  --container-max: 1200px;
}

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

body {
  background-color: var(--surface);
  color: var(--on-surface);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 24px;
  min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
button, input, label { font-family: inherit; }
img { display: block; max-width: 100%; }

/* ---------- TopNavBar ---------- */
.topnav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 50;
  background: rgba(249,249,255,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
}

.topnav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 var(--space-mobile);
  max-width: var(--container-max);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .topnav__inner { padding: 0 var(--space-lg); }
}

.topnav__brand {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -.01em;
}

.topnav__links {
  display: none;
  gap: var(--space-md);
  margin-left: var(--space-lg);
}

@media (min-width: 768px) {
  .topnav__links { display: flex; }
}

.topnav__link {
  font-size: 16px;
  line-height: 24px;
  color: var(--on-surface-variant);
  transition: color .2s;
}
.topnav__link:hover { color: var(--primary); }

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

.topnav__search-wrap {
  display: none;
  position: relative;
}
@media (min-width: 640px) {
  .topnav__search-wrap { display: block; }
}

.topnav__search-icon {
  position: absolute;
  left: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  color: var(--outline-variant);
  font-size: 20px;
}

.topnav__search-input {
  padding: var(--space-xs) var(--space-md) var(--space-xs) 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--outline-variant);
  background: var(--surface-container-low);
  font-size: 14px;
  outline: none;
  transition: border-color .2s;
}
.topnav__search-input:focus { border-color: var(--primary); }

.btn-signin {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  background: var(--primary);
  color: var(--on-primary);
  padding: var(--space-xs) var(--space-lg);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: transform .15s;
}
.btn-signin:active { transform: scale(.95); }

/* ---------- Main Layout ---------- */
main {
  padding-top: var(--space-xxl);
  padding-bottom: var(--space-xxl);
  padding-left: var(--space-mobile);
  padding-right: var(--space-mobile);
  max-width: var(--container-max);
  margin: 64px auto 0;
}

@media (min-width: 768px) {
  main { padding-left: var(--space-lg); padding-right: var(--space-lg); }
}

/* ---------- Hero Section ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
  .hero { grid-template-columns: repeat(12, 1fr); }
  .hero__image-wrap  { grid-column: span 4; }
  .hero__content     { grid-column: span 8; }
}

.hero__image-wrap {
  aspect-ratio: 16/9;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,.1);
}
@media (min-width: 768px) {
  .hero__image-wrap { aspect-ratio: 1/1; }
}

.hero__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .05em;
  line-height: 16px;
}
.badge--secondary {
  background: var(--secondary-container);
  color: var(--on-secondary-container);
}
.badge--tertiary {
  background: var(--tertiary-fixed);
  color: var(--on-tertiary-fixed-variant);
}

.hero__title {
  font-family: var(--font-display);
  font-size: 32px;
  line-height: 40px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--on-background);
  margin-bottom: var(--space-sm);
}
@media (min-width: 768px) {
  .hero__title { font-size: 48px; line-height: 56px; }
}

.hero__desc {
  font-size: 18px;
  line-height: 28px;
  color: var(--on-surface-variant);
  max-width: 42rem;
  margin-bottom: var(--space-md);
}

.hero__rating {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.hero__rating .star-icon {
  color: var(--tertiary);
  font-variation-settings: 'FILL' 1;
}
.hero__rating strong { font-weight: 700; color: var(--on-surface); }
.hero__rating span   { color: var(--on-surface-variant); }

/* ---------- Content Grid ---------- */
.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: start;
}
@media (min-width: 1024px) {
  .content-grid { grid-template-columns: 2fr 1fr; }
}

.left-col  { display: flex; flex-direction: column; gap: var(--space-lg); }
.right-col { display: flex; flex-direction: column; gap: var(--space-lg); }

/* ---------- Card ---------- */
.card {
  background: var(--surface-container-lowest);
  padding: var(--space-lg);
  border-radius: var(--radius-xl);
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
  border: 1px solid rgba(193,198,215,.3);
}

/* ---------- Step Heading ---------- */
.step-heading {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.step-badge {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: var(--on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.step-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 28px;
}

/* ---------- Account Form ---------- */
.account-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
@media (min-width: 640px) {
  .account-grid { grid-template-columns: 1fr 1fr; }
}

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

.field-label {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--on-surface-variant);
  text-transform: uppercase;
}

.field-input {
  height: 48px;
  padding: 0 var(--space-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--outline-variant);
  background: var(--surface-container-lowest);
  font-size: 16px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  color: var(--on-surface);
}
.field-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0,89,187,.15);
}

.field-hint {
  margin-top: var(--space-md);
  font-size: 14px;
  line-height: 20px;
  color: var(--on-surface-variant);
  font-style: italic;
}

/* ---------- Diamond Grid ---------- */
.diamond-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}
@media (min-width: 640px) { .diamond-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 768px) { .diamond-grid { grid-template-columns: repeat(4, 1fr); } }

.diamond-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  border-radius: var(--radius-xl);
  border: 2px solid var(--outline-variant);
  background: var(--surface-bright);
  cursor: pointer;
  transition: border-color .25s, background .25s, box-shadow .25s, transform .15s;
  text-align: center;
  position: relative;
  /* penting: label bisa klik semua area */
  user-select: none;
}

/* Hover — belum dipilih */
.diamond-card:hover {
  border-color: rgba(0,89,187,.45);
  background: var(--surface-container-low);
}

.diamond-card:active { transform: scale(.95); }

/* ===== SELECTED STATE via :has() ===== */
/* Ketika radio di dalam label ini ter-checked */
.diamond-card:has(.diamond-radio:checked) {
  border-color: var(--primary);
  background: linear-gradient(135deg, var(--primary-fixed) 0%, #c5d8ff 100%);
  box-shadow: 0 4px 16px rgba(0,89,187,.25);
  transform: scale(1.03);
}

/* Icon diamond berubah lebih besar & cerah saat dipilih */
.diamond-card:has(.diamond-radio:checked) .diamond-icon {
  color: var(--primary-container);
  font-size: 30px;
  filter: drop-shadow(0 0 6px rgba(0,89,187,.4));
}

/* Label teks lebih gelap saat dipilih */
.diamond-card:has(.diamond-radio:checked) .diamond-label {
  color: var(--primary);
}

/* Harga lebih kontras saat dipilih */
.diamond-card:has(.diamond-radio:checked) .diamond-price {
  color: var(--on-primary-fixed-variant);
  font-weight: 600;
}

/* ===== CHECK ICON ===== */
/* Sembunyikan default — muncul hanya saat dipilih */
.diamond-card__check {
  position: absolute;
  top: 8px;
  right: 8px;
  color: var(--primary);
  font-size: 18px;
  font-variation-settings: 'FILL' 1;
  opacity: 0;
  transform: scale(.4) rotate(-30deg);
  transition: opacity .25s ease, transform .3s cubic-bezier(.34,1.56,.64,1);
  pointer-events: none;
}

/* Tampil dengan animasi spring saat dipilih */
.diamond-card:has(.diamond-radio:checked) .diamond-card__check {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

/* ===== HOT BADGE ===== */
.diamond-card__hot {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--tertiary);
  color: var(--on-tertiary);
  padding: 2px var(--space-xs);
  border-radius: var(--radius);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .05em;
  white-space: nowrap;
  pointer-events: none;
}

/* ===== DIAMOND ICON (default) ===== */
.diamond-icon {
  color: var(--primary);
  font-variation-settings: 'FILL' 1;
  font-size: 24px;
  margin-bottom: var(--space-xs);
  transition: font-size .25s, color .25s, filter .25s;
}

.diamond-label {
  font-weight: 700;
  color: var(--on-surface);
  font-size: 15px;
  transition: color .2s;
}

.diamond-price {
  font-size: 14px;
  line-height: 20px;
  color: var(--on-surface-variant);
  transition: color .2s, font-weight .2s;
}

/* ---------- Payment Method ---------- */
.payment-section-label {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--on-surface-variant);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.payment-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.payment-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: background .15s;
}
.payment-option:hover { background: var(--surface-container); }

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

.payment-logo {
  width: 40px;
  height: 24px;
  background: #f1f5f9;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 9px;
  color: #334155;
  letter-spacing: .02em;
}

.payment-name {
  font-weight: 500;
  font-size: 15px;
  color: var(--on-surface);
}

.payment-radio {
  width: 20px;
  height: 20px;
  accent-color: var(--primary);
  cursor: pointer;
  border: 1px solid var(--outline-variant);
  border-radius: 50%;
}

/* ---------- Order Summary ---------- */
.summary-card {
  background: var(--primary);
  color: var(--on-primary);
  padding: var(--space-lg);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 16px rgba(0,89,187,.35);
}

.summary-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.summary-rows {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  border-bottom: 1px solid rgba(255,255,255,.2);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-md);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  opacity: .9;
}

.summary-total {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.btn-topup {
  width: 100%;
  background: var(--surface);
  color: var(--primary);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  border: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: background .15s, transform .15s;
  box-shadow: 0 2px 6px rgba(0,0,0,.1);
  margin-bottom: var(--space-sm);
}
.btn-topup:hover  { background: var(--surface-container); }
.btn-topup:active { transform: scale(.95); }

.summary-disclaimer {
  font-size: 10px;
  text-align: center;
  opacity: .7;
  line-height: 1.4;
}

/* ---------- Footer ---------- */
footer {
  background: var(--surface-container-lowest);
  border-top: 1px solid var(--outline-variant);
  width: 100%;
  padding: var(--space-xl) 0;
  margin-top: var(--space-xxl);
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-mobile);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    padding: 0 var(--space-lg);
  }
}

.footer__brand-block {
  display: flex;
  flex-direction: column;
  align-items: center;
}
@media (min-width: 768px) {
  .footer__brand-block { align-items: flex-start; }
}

.footer__brand {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
}

.footer__copy {
  font-size: 14px;
  color: var(--on-surface-variant);
  margin-top: var(--space-xs);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
}

.footer__link {
  font-size: 14px;
  color: var(--on-surface-variant);
  transition: color .2s;
}
.footer__link:hover { color: var(--primary); }

/* ---------- 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;
  -webkit-font-feature-settings: 'liga';
  font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  user-select: none;
}