/* ══════════════════════════════════════════════
   PORTAL MAHASISWA — style.css
   Pink-Matcha Aesthetic · Vanilla CSS
══════════════════════════════════════════════ */

/* ── 1. DESIGN TOKENS ─────────────────────── */
:root {
  --pink-light:   #fdf0f5;
  --pink-soft:    #f9dde9;
  --pink-mid:     #e8a0bc;
  --pink-deep:    #c96b96;

  --matcha-light: #e8f5e2;
  --matcha-soft:  #c8e6b8;
  --matcha-mid:   #7daf60;
  --matcha-deep:  #4e8838;

  --cream:        #fdf8f2;
  --text-dark:    #2d2523;
  --text-mid:     #5a4f4c;
  --text-soft:    #9a8d8a;
  --border:       #edd8e4;
  --white:        #ffffff;

  --grad-hero:    linear-gradient(135deg, #fdf0f5 0%, #eaf4e2 50%, #fdf0f5 100%);
  --grad-card:    linear-gradient(160deg, rgba(253,240,245,0.9) 0%, rgba(232,245,226,0.7) 100%);
  --grad-btn:     linear-gradient(135deg, var(--pink-deep) 0%, var(--matcha-mid) 100%);
  --grad-btn-h:   linear-gradient(135deg, var(--matcha-mid) 0%, var(--pink-deep) 100%);

  --shadow-sm:    0 2px 12px rgba(201,107,150,0.10);
  --shadow-md:    0 8px 32px rgba(201,107,150,0.15);
  --shadow-lg:    0 20px 60px rgba(201,107,150,0.18);

  --radius-sm:    10px;
  --radius-md:    18px;
  --radius-lg:    28px;

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'Plus Jakarta Sans', sans-serif;

  --transition:   0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-s: 0.2s ease;
}

/* ── 2. RESET & BASE ───────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--grad-hero);
  min-height: 100vh;
  color: var(--text-dark);
  overflow-x: hidden;
  position: relative;
}

/* ── 3. BACKGROUND BLOBS ──────────────────── */
.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  pointer-events: none;
  z-index: 0;
  animation: blobFloat 8s ease-in-out infinite alternate;
}
.blob-1 {
  width: 420px; height: 420px;
  background: radial-gradient(circle, #f9c4d8 0%, transparent 70%);
  top: -100px; left: -100px;
  animation-duration: 9s;
}
.blob-2 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, #b8dfa0 0%, transparent 70%);
  bottom: 0; right: -80px;
  animation-duration: 11s; animation-delay: -3s;
}
.blob-3 {
  width: 260px; height: 260px;
  background: radial-gradient(circle, #f4b8d0 0%, transparent 70%);
  top: 50%; left: 55%;
  animation-duration: 13s; animation-delay: -6s;
}

@keyframes blobFloat {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, 20px) scale(1.08); }
}

/* ── 4. LAYOUT ────────────────────────────── */
.container {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

/* ── 5. HEADER ────────────────────────────── */
.site-header {
  text-align: center;
  margin-bottom: 36px;
  animation: fadeDown 0.7s ease both;
}

.header-badge {
  display: inline-block;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 6px 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--pink-deep);
  text-transform: uppercase;
  margin-bottom: 18px;
  backdrop-filter: blur(8px);
}

.site-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.15;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.site-title em {
  font-style: italic;
  background: var(--grad-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-subtitle {
  font-size: 15px;
  color: var(--text-soft);
  font-weight: 400;
  line-height: 1.6;
}

/* ── 6. TAB NAV ───────────────────────────── */
.tab-nav {
  display: flex;
  gap: 10px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 6px;
  margin-bottom: 28px;
  backdrop-filter: blur(12px);
  animation: fadeDown 0.7s 0.1s ease both;
}

.tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-soft);
  cursor: pointer;
  transition: all var(--transition-s);
}

.tab-btn:hover {
  color: var(--text-dark);
  background: rgba(255,255,255,0.5);
}

.tab-btn.active {
  background: var(--grad-btn);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(201,107,150,0.35);
}

.tab-icon {
  font-size: 16px;
}

/* ── 7. CARDS ─────────────────────────────── */
.card {
  background: var(--grad-card);
  border: 1px solid rgba(255,255,255,0.85);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(16px);
  margin-bottom: 20px;
  animation: fadeUp 0.6s 0.15s ease both;
}

.card-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px dashed var(--border);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.card-desc {
  font-size: 13.5px;
  color: var(--text-soft);
}

/* ── 8. FORM FIELDS ───────────────────────── */
.field-group {
  margin-bottom: 20px;
}

.field-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-mid);
  margin-bottom: 8px;
}

.required { color: var(--pink-deep); }

.input-wrap {
  position: relative;
}

.field-input {
  width: 100%;
  padding: 13px 44px 13px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.75);
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--text-dark);
  outline: none;
  transition: all var(--transition-s);
  appearance: none;
  -webkit-appearance: none;
}

.field-input::placeholder {
  color: #c4b5b0;
}

.field-input:hover {
  border-color: var(--pink-mid);
  background: rgba(255,255,255,0.9);
}

.field-input:focus {
  border-color: var(--pink-deep);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(201,107,150,0.12), 0 2px 12px rgba(201,107,150,0.10);
  transform: translateY(-1px);
}

/* Valid state */
.field-group.valid .field-input {
  border-color: var(--matcha-mid);
  box-shadow: 0 0 0 4px rgba(125,175,96,0.10);
}

/* Error state */
.field-group.error .field-input {
  border-color: #e05b7a;
  box-shadow: 0 0 0 4px rgba(224,91,122,0.12);
  animation: shake 0.35s ease;
}

@keyframes shake {
  0%,100% { transform: translateX(0); }
  25%      { transform: translateX(-4px); }
  75%      { transform: translateX(4px); }
}

/* Input icon */
.input-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--pink-mid);
  pointer-events: none;
  transition: color var(--transition-s);
}

.field-group.valid .input-icon { color: var(--matcha-mid); }
.field-group.error .input-icon { color: #e05b7a; }

/* Select dropdown */
.select-wrap .field-input { padding-right: 40px; cursor: pointer; }

.select-arrow {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  color: var(--pink-mid);
  pointer-events: none;
}

/* Disabled select */
.field-input:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  background: rgba(240,235,238,0.5);
}

/* Error message */
.field-error {
  font-size: 12px;
  font-weight: 600;
  color: #d0405e;
  margin-top: 6px;
  min-height: 16px;
  display: flex;
  align-items: center;
  gap: 5px;
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.2s ease;
}

.field-error.show {
  opacity: 1;
  transform: translateY(0);
}

.field-error::before {
  content: '⚠';
  font-size: 11px;
}

/* ── 9. FORM ACTIONS ──────────────────────── */
.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px dashed var(--border);
}

.btn-reset {
  padding: 13px 24px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-soft);
  cursor: pointer;
  transition: all var(--transition-s);
}

.btn-reset:hover {
  border-color: var(--pink-mid);
  color: var(--pink-deep);
  background: rgba(249,221,233,0.3);
}

.btn-submit {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 28px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--grad-btn);
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--white);
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(201,107,150,0.35);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-submit::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-btn-h);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.btn-submit:hover::before { opacity: 1; }
.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(201,107,150,0.45);
}
.btn-submit:active { transform: translateY(0); }

.btn-label, .btn-icon { position: relative; z-index: 1; }
.btn-icon { font-size: 18px; }

/* ── 10. SUCCESS CARD ─────────────────────── */
.success-card {
  background: linear-gradient(135deg, rgba(232,245,226,0.9) 0%, rgba(200,230,184,0.6) 100%);
  border: 1.5px solid var(--matcha-soft);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(78,136,56,0.15);
  animation: scaleIn 0.5s var(--transition) both;
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

.success-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--grad-btn);
  color: white;
  font-size: 28px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 6px 24px rgba(78,136,56,0.3);
}

.success-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--matcha-deep);
  margin-bottom: 8px;
}

.success-msg {
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 20px;
}

.success-data {
  background: rgba(255,255,255,0.6);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: left;
  font-size: 13.5px;
  line-height: 2;
  color: var(--text-mid);
  margin-bottom: 24px;
}

.success-data strong { color: var(--text-dark); }

/* ── 11. KODEPOS RESULT ───────────────────── */
.result-card {
  background: linear-gradient(135deg, rgba(253,240,245,0.95) 0%, rgba(232,245,226,0.85) 100%);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow-md);
  animation: scaleIn 0.45s var(--transition) both;
}

.result-header { margin-bottom: 16px; }

.result-badge {
  display: inline-block;
  background: var(--grad-btn);
  color: white;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 16px;
  border-radius: 50px;
}

.result-kodepos {
  font-family: var(--font-display);
  font-size: clamp(3rem, 12vw, 5rem);
  background: var(--grad-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.06em;
  line-height: 1;
  margin: 8px 0 16px;
}

.result-info {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.9;
}

.result-info .info-row {
  display: flex;
  justify-content: center;
  gap: 6px;
}

.info-label {
  font-weight: 700;
  color: var(--pink-deep);
}

/* ── 12. LOADING BAR ──────────────────────── */
.loading-bar {
  height: 3px;
  background: var(--border);
  border-radius: 50px;
  overflow: hidden;
  margin: 12px 0;
}

.loading-fill {
  height: 100%;
  width: 0;
  background: var(--grad-btn);
  border-radius: 50px;
  animation: loadingAnim 1.2s ease-in-out infinite;
}

@keyframes loadingAnim {
  0%   { width: 0; margin-left: 0; }
  50%  { width: 60%; }
  100% { width: 0; margin-left: 100%; }
}

/* ── 13. FOOTER ───────────────────────────── */
.site-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 20px;
  font-size: 12.5px;
  color: var(--text-soft);
}

/* ── 14. ANIMATIONS ───────────────────────── */
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── 15. RESPONSIVE ───────────────────────── */
@media (max-width: 640px) {
  .container { padding: 24px 16px 48px; }
  .card { padding: 24px 20px; }
  .tab-btn { font-size: 12.5px; padding: 10px 10px; }
  .tab-icon { display: none; }
  .form-actions { flex-direction: column-reverse; }
  .btn-reset { width: 100%; }
}

@media (max-width: 380px) {
  .site-title { font-size: 1.8rem; }
}