:root {
  --gold: #f9c015;
  --gold-dark: #d9a300;
  --ink: #1e1e1e;
  --soft-black: #3a3a3a;
  --bg-light: #f7f7f7;
  --white: #ffffff;
  --teal: #0f6f6a;
  --success: #2e8b57;
  --warning: #ff8c42;
  --error: #c0392b;
}

/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: systems-ui, sans-serif;
}

body {
  background: var(--bg-light);
  color: var(--ink);
  line-height: 1.6;
}

/* Layout */
.container {
  max-width: 1100px;
  margin: auto;
  padding: 1rem;
}

.card {
  background: var(--white);
  border-radius: 8px;
  padding: 1.2rem;
  margin-bottom: 1.2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.quiz-card {
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.quiz-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.quiz-detail-card {
  padding: 1.2rem;
}

.question-card {
  display: none;
}

.question-card.active {
  display: block;
}

.quiz-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
}

.text-warning {
  color: var(--warning);
  font-weight: bold;
}

h1,
h2,
h3 {
  color: var(--ink);
}

/* Buttons */
.btn {
  background: var(--gold);
  color: var(--ink);
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 5px;
  text-decoration: none;
  display: inline;
  cursor: pointer;
  transition: 0.2s;
  margin-top: 0.5rem;
  display: inline-block;
}

.btn:hover {
  background: var(--gold-dark);
}

/* Links */
a {
  color: var(--teal);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Badges */
.badge {
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.8rem;
  color: white;
}
.badge-success {
  background: var(--success);
}
.badge-warning {
  background: var(--warning);
}
.badge-error {
  background: var(--error);
}

.badge-info {
  background: var(--teal);
}

/* Forms */
input,
textarea {
  width: 100%;
  padding: 0.5rem;
  margin-bottom: 0.6rem;
  border-radius: 4px;
  border: 1px solid #ccc;
}
form input,
form textarea,
form select {
  margin-bottom: 0.8rem;
}

.question-card {
  margin-bottom: 1rem;
  padding: 1rem;
}

.choice-label {
  display: block;
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.3rem;
  cursor: pointer;
  transition: background 0.2s;
}

.choice-label:hover {
  background: f0f0f0;
}

.question-text {
  font-weight: bold;
}

.answer-card.correct {
  border-left: 4px solid var(--success);
}
.answer-card.wrong {
  border-left: 4px solid var(--error);
}

.result-summary {
  margin-bottom: 1.5rem;
}

.attempt-card {
  padding: 1rem;
}

.navigation-links {
  margin-top: 1rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Navbar */
nav {
  background: var(--ink);
  padding: 0.8rem;
}

nav a {
  color: var(--white);
  margin-right: 1rem;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--ink);
  padding: 0.6rem 1rem;
  flex-wrap: wrap;
}

.navbar-left img.logo {
  height: 40px;
}

.navbar-right a {
  color: var(--white);
  margin-left: 1rem;
  text-decoration: none;
}

.navbar-right a:hover {
  color: var(--gold);
}

/* Footer */
.footer {
  background: var(--soft-black);
  color: var(--white);
  padding: 1rem 0;
  text-align: center;
  margin-top: 2rem;
}

.footer p {
  margin: 0.3rem 0;
  font-size: 0.9rem;
}

/* Question cards */
.question-card {
  display: none; /* hide all by default */
  margin-bottom: 1rem;
  padding: 1.2rem;
}

/* Active question visible */
.question-card.active {
  display: block;
}

/* Choices styling */
.choice-label {
  display: block;
  padding: 0.5rem 0.8rem;
  border-radius: 5px;
  margin-bottom: 0.4rem;
  cursor: pointer;
  transition: background 0.2s;
}

.choice-label:hover {
  background: #f0f0f0;
}

/* Quiz navigation buttons */
.quiz-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
}

/* Progress indicator */
#progress {
  margin-top: 0.5rem;
  font-weight: bold;
  color: var(--teal);
}

/* Inbox page */
.inbox-card {
  padding: 1rem;
  margin-bottom: 1rem;
  border-radius: 8px;
  transition: box-shadow 0.2s;
  border-left: 4px solid var(--soft-black);
  background: var(--white);
}

.inbox-card.unread {
  background: #f5f5f5; /* light background for unread */
  border-left-color: var(--teal); /* teal highlight for unread */
}

.inbox-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.msg-sender a {
  color: var(--ink);
  text-decoration: none;
}

.msg-sender a:hover {
  color: var(--teal);
  text-decoration: underline;
}

.msg-preview {
  margin: 0.5rem 0;
  color: var(--soft-black);
}

.msg-date {
  font-size: 0.85rem;
  color: var(--soft-black);
}

.msg-actions {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-small {
  padding: 0.3rem 0.7rem;
  font-size: 0.85rem;
}

.pagination {
  margin-top: 1.5rem;
  text-align: center;
}

.pagination a {
  margin: 0 0.3rem;
  color: var(--teal);
  text-decoration: none;
}

.pagination a:hover {
  text-decoration: underline;
}

.pagination .current {
  font-weight: bold;
  color: var(--ink);
}

/* Message detail card */
.message-detail-card {
  padding: 1.2rem;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  margin-bottom: 1.5rem;
}

.msg-body {
  margin: 1rem 0;
  line-height: 1.5;
  color: var(--soft-black);
}

/* Action buttons */
.msg-actions {
  margin-top: 1rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-small {
  padding: 0.3rem 0.7rem;
  font-size: 0.85rem;
}

/* Home page card */
.home-header {
  padding: 1.5rem;
  margin-bottom: 2rem;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  text-align: center;
}

/* Links/buttons */
.home-links {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.user-greeting {
  margin-top: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Badge for unread messages */
.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 10px;
  font-size: 0.8rem;
  color: white;
  font-weight: bold;
}

.badge-error {
  background: var(--error); /* Crimson */
}

/* Buttons */
.btn-small {
  padding: 0.4rem 0.9rem;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 600px) {
  .home-links,
  .user-greeting {
    flex-direction: column;
  }
}

/* Responsive: stack buttons on mobile */
@media (max-width: 600px) {
  .msg-actions {
    flex-direction: column;
  }
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

/* Dashboard Cards */
.dashboard-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.dashboard-card h3 {
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.dashboard-card p {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--soft-black);
}

/* Card Color Variants */
.card-unread {
  border-top: 4px solid var(--accent-cool); /* teal for unread */
}

.card-archived {
  border-top: 4px solid var(--warning); /* warm orange for archived */
}

.card-today {
  border-top: 4px solid var(--success); /* green for today */
}

/* Hover effect */
.dashboard-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

/* Responsive: grid stacks */
@media (max-width: 600px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

/* Responsive */
@media (max-width: 600px) {
  .msg-actions {
    flex-direction: column;
  }

  .pagination {
    font-size: 0.9rem;
  }
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.dashboard-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
  cursor: pointer;
}

.dashboard-card h3 {
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.dashboard-card p {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--soft-black);
}

/* Variants */
.card-unread {
  border-top: 4px solid var(--accent-cool);
}
.card-archived {
  border-top: 4px solid var(--warning);
}
.card-today {
  border-top: 4px solid var(--success);
}
.card-warning {
  border-top: 4px solid var(--warning);
}

.dashboard-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.recent-quizzes {
  margin-top: 2rem;
  padding: 1rem;
  background: var(--white);
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.recent-quizzes ul {
  padding-left: 1.2rem;
}

@media (max-width: 600px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

/* Responsive: stack buttons on mobile */
@media (max-width: 600px) {
  .quiz-nav {
    flex-direction: column;
    gap: 0.5rem;
  }
}

/* Mobile Responsive Rules */
@media (min-width: 600px) {
  .grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .navbar-right {
    margin-top: 0.5rem;
  }

  .navbar-right a {
    display: block;
    margin: 0.3rem 0;
  }

  .footer {
    padding: 1rem;
  }
}

@media (max-width: 600px) {
  .quiz-nav {
    flex-direction: column;
    gap: 0.5rem;
  }
}

@media (max-width: 768px) {
  .card {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

  .choice-label {
    padding: 0.6rem;
  }

  .navbar-right {
    flex-direction: column;
    align-items: flex-start;
  }

  .navbar-right a {
    margin: 0.3rem 0;
  }
}