/* ======================================
   TINGKAT TUTUR – FULL COLOR PREMIUM UI
   Modern Edukasi + Batik Nusantara
====================================== */

:root {
  --green-main: #00c853;
  --green-dark: #009624;
  --green-light: #69f0ae;

  --blue: #2979ff;
  --purple: #7c4dff;

  --text-dark: #1f2937;
  --white: #ffffff;

  --shadow: 0 14px 35px rgba(0,0,0,0.15);
  --radius: 16px;
}

/* ================= GLOBAL ================= */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, sans-serif;
  color: var(--text-dark);

  /* 🔥 FULL COLOR + BATIK */
  background:
    linear-gradient(rgba(255,255,255,0.75), rgba(255,255,255,0.75)),
    url("https://www.transparenttextures.com/patterns/batik.png"),
    radial-gradient(circle at 20% 20%, rgba(0,200,83,0.25), transparent 50%),
    radial-gradient(circle at 80% 30%, rgba(41,121,255,0.25), transparent 50%),
    radial-gradient(circle at 50% 90%, rgba(124,77,255,0.2), transparent 50%),
    linear-gradient(135deg, #d4ffe3, #eafff3);

  min-height: 100vh;
}

/* ================= HEADER ================= */
.tt-header {
  background: linear-gradient(135deg, var(--green-main), var(--blue));
  color: white;
  padding: 28px 20px;
  text-align: center;

  box-shadow: var(--shadow);
  position: relative;
}

/* garis aksen */
.tt-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--green-main), var(--purple), var(--blue));
}

.tt-header h1 {
  margin: 0;
  font-size: 1.9rem;
  font-weight: 800;
}

.tt-header p {
  margin-top: 6px;
  font-size: 0.95rem;
  opacity: 0.9;
}

/* ================= INFO ================= */
.tt-info {
  max-width: 1000px;
  margin: 20px auto 0;
  padding: 14px 18px;

  display: flex;
  justify-content: space-between;

  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);

  border-left: 6px solid var(--green-main);
  border-radius: var(--radius);
  box-shadow: var(--shadow);

  font-weight: 600;
}

/* ================= CONTAINER ================= */
.tt-container {
  max-width: 1000px;
  margin: 20px auto 60px;
  padding: 0 18px;
}

/* ================= SOAL ================= */
.tt-soal {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);

  padding: 22px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);

  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: center;

  margin-bottom: 18px;
}

.tt-soal h3 {
  margin: 0;
  color: var(--green-dark);
}

#tt-pertanyaan {
  margin-top: 10px;
  font-weight: 500;
  font-size: 1.05rem;
}

/* ================= PILIHAN ================= */
.tt-pilihan {
  display: grid;
  gap: 12px;
  min-height: 220px;
}

.tt-pilihan button {
  padding: 14px 16px;
  border-radius: var(--radius);

  background: rgba(255,255,255,0.95);
  border: 2px solid rgba(0,0,0,0.08);

  cursor: pointer;
  font-size: 1rem;
  text-align: left;

  transition: 0.3s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.tt-pilihan button:hover {
  background: linear-gradient(135deg, var(--green-main), var(--blue));
  color: white;
  transform: translateY(-3px);
}

.tt-pilihan button.active {
  background: linear-gradient(135deg, var(--green-dark), var(--purple));
  color: white;
  font-weight: 600;
}

/* ================= NAV ================= */
.tt-nav {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.tt-nav button {
  padding: 10px 16px;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  cursor: pointer;

  transition: 0.3s;
}

/* tombol */
#btn-prev {
  background: linear-gradient(135deg, #e0e7ff, #bfdbfe);
}

#btn-next {
  background: linear-gradient(135deg, var(--green-main), var(--blue));
  color: white;
}

#btn-finish {
  background: linear-gradient(135deg, var(--green-dark), var(--purple));
  color: white;
}

.tt-nav button:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* ================= REVIEW ================= */
#review-list div {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);

  padding: 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 12px;
}

/* tombol kembali */
#review-page button {
  margin-top: 20px;
  padding: 12px 18px;
  border-radius: var(--radius);

  background: linear-gradient(135deg, var(--green-main), var(--blue));
  color: white;

  font-weight: 600;
  border: none;
  cursor: pointer;
}

#review-page button:hover {
  transform: translateY(-3px);
}

/* ================= FOOTER ================= */
.tt-footer {
  margin-top: auto;
  text-align: center;
  padding: 18px;

  background: linear-gradient(135deg, var(--green-dark), var(--blue));
  color: white;

  position: relative;
}

/* garis aksen */
.tt-footer::before {
  content: "";
  position: absolute;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--green-main), var(--purple), var(--blue));
}

/* ================= ANIMASI ================= */
.tt-soal,
.tt-pilihan button {
  opacity: 0;
  transform: translateY(10px);
  animation: fadeUp 0.4s ease forwards;
}

.tt-pilihan button:nth-child(1) { animation-delay: 0.05s; }
.tt-pilihan button:nth-child(2) { animation-delay: 0.1s; }
.tt-pilihan button:nth-child(3) { animation-delay: 0.15s; }
.tt-pilihan button:nth-child(4) { animation-delay: 0.2s; }

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

/* ================= RESPONSIVE ================= */
@media (max-width: 600px) {
  .tt-info {
    flex-direction: column;
    gap: 6px;
  }

  .tt-nav {
    justify-content: center;
  }
}