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

:root {
  --bg-gradient: linear-gradient(135deg, #0f172a, #1d4ed8);
  --card-bg: rgba(15, 23, 42, 0.95);
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, 0.2);
  --accent-secondary: #38bdf8;
  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
  --danger: #f97373;
  --radius-lg: 1.5rem;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.7);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s ease;
}

html,
body {
  height: 100%;
}

body {
  font-family: "Poppins", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  background-image: var(--bg-gradient);
  color: var(--text-main);
  display: flex;
  flex-direction: column;
}

/* NAVBAR */

.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.5rem;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.logo span {
  color: var(--accent-secondary);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(148, 163, 184, 0.7);
  color: var(--text-main);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  font-size: 1.1rem;
  cursor: pointer;
}

/* NAV LINKS */

.nav-links {
  display: flex;
  gap: 0.6rem;
}

.nav-link {
  border: none;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: background var(--transition-fast), color var(--transition-fast),
    transform var(--transition-fast);
}

.nav-link:hover {
  background: rgba(148, 163, 184, 0.15);
  color: #f9fafb;
  transform: translateY(-1px);
}

.nav-link.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

/* MAIN CONTENT */

.content {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 1.5rem auto 2.5rem;
  padding: 0 1.25rem;
}

.page {
  display: none;
}

.page.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.6rem 1.7rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.25);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: -40%;
  opacity: 0.08;
  background: radial-gradient(
      circle at 0 0,
      var(--accent-secondary),
      transparent 58%
    ),
    radial-gradient(circle at 100% 100%, var(--accent), transparent 55%);
  z-index: -1;
}

h1 {
  font-size: 1.7rem;
  margin-bottom: 0.4rem;
}

.subtitle {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 1.3rem;
}

/* FORM STYLE */

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.2rem;
  margin-bottom: 1.3rem;
}

.form-grid .full-width {
  grid-column: 1 / -1;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

label {
  font-size: 0.85rem;
  color: #d1d5db;
}

input,
select {
  padding: 0.55rem 0.7rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: rgba(15, 23, 42, 0.9);
  color: var(--text-main);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast), background var(--transition-fast);
}

input::placeholder {
  color: rgba(148, 163, 184, 0.7);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--accent-secondary);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.5);
  background: rgba(15, 23, 42, 0.97);
}

/* BUTTONS */

.primary-btn,
.secondary-btn,
.ghost-btn {
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0.55rem 1.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  transition: background var(--transition-normal),
    transform var(--transition-fast), box-shadow var(--transition-fast),
    color var(--transition-fast), border-color var(--transition-fast);
}

.primary-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  color: #0f172a;
  font-weight: 600;
  box-shadow: 0 10px 28px rgba(34, 197, 94, 0.35);
}

.primary-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 35px rgba(34, 197, 94, 0.45);
}

.primary-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.secondary-btn {
  background: rgba(15, 23, 42, 0.95);
  color: var(--accent-secondary);
  border: 1px solid rgba(56, 189, 248, 0.5);
}

.secondary-btn:hover {
  background: rgba(15, 23, 42, 1);
}

.ghost-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px dashed rgba(148, 163, 184, 0.7);
}

.ghost-btn:hover {
  border-style: solid;
  color: #f9fafb;
}

/* RESULT BOX */

.result-box {
  margin-top: 0.6rem;
  padding: 1rem 1rem 0.9rem;
  border-radius: 1.1rem;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.55);
}

.result-box h2 {
  font-size: 1.2rem;
  margin-bottom: 0.3rem;
}

.result-box .advice {
  margin-top: 0.35rem;
  font-size: 0.86rem;
  color: var(--accent-secondary);
}

.hidden {
  display: none;
}

/* LIFE TIPS LIST */

.tips-list {
  margin-top: 0.7rem;
  padding-left: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.87rem;
}

.tips-list li::marker {
  color: var(--accent-secondary);
}

/* GAME */

.game-wrapper {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 1.1rem;
  align-items: flex-start;
}

.game-status {
  padding: 0.9rem 1rem;
  border-radius: 1.1rem;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.4);
  font-size: 0.9rem;
}

#game-message {
  margin-bottom: 0.6rem;
}

#game-attempts,
#game-best {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.game-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

#guess-input {
  max-width: 100px;
}

/* FOOTER */

.footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.7rem 0.5rem 1rem;
}

/* ANIMATION */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* RESPONSIVE */

@media (max-width: 768px) {
  .navbar {
    padding-inline: 1rem;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    padding: 0.5rem 1rem 0.8rem;
    background: rgba(15, 23, 42, 0.97);
    border-bottom: 1px solid rgba(148, 163, 184, 0.4);
    display: none;
    flex-direction: column;
    gap: 0.4rem;
  }

  .nav-links.open {
    display: flex;
  }

  .content {
    margin-top: 1.1rem;
    padding-inline: 1rem;
  }

  .card {
    padding: 1.4rem 1.3rem 1.3rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .game-wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.4rem;
  }
}