@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg: #09090b;
  --bg-subtle: #18181b;
  --bg-card: rgba(24, 24, 27, 0.6);
  --bg-elevated: rgba(39, 39, 42, 0.5);
  --border: rgba(63, 63, 70, 0.5);
  --border-hover: rgba(82, 82, 91, 0.7);
  --text: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #f4f4f5;
  --accent-hover: #e4e4e7;
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.1);
  --green-border: rgba(34, 197, 94, 0.2);
  --amber: #f59e0b;
  --amber-bg: rgba(245, 158, 11, 0.1);
  --amber-border: rgba(245, 158, 11, 0.2);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.1);
  --red-border: rgba(239, 68, 68, 0.2);
  --blue: #3b82f6;
  --blue-bg: rgba(59, 130, 246, 0.1);
  --blue-border: rgba(59, 130, 246, 0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.4);
  --transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  min-height: 100vh;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

header {
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.875rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo { display: flex; align-items: center; gap: 0.75rem; }

.logo-icon {
  width: 32px; height: 32px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.875rem; color: var(--bg);
}

.logo h1 { font-size: 1rem; font-weight: 600; color: var(--text); letter-spacing: -0.02em; }

nav { display: flex; align-items: center; gap: 1rem; }

.username {
  font-weight: 500; color: var(--text-secondary); font-size: 0.875rem;
  padding: 0.375rem 0.75rem; background: var(--bg-elevated);
  border-radius: 9999px; border: 1px solid var(--border);
}

.logout-form { display: inline; }

main { max-width: 1200px; margin: 2rem auto; padding: 0 2rem; }

.btn {
  padding: 0.5rem 1rem; border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: 0.8125rem; font-weight: 500;
  font-family: inherit; cursor: pointer; transition: all var(--transition);
  text-decoration: none; display: inline-flex; align-items: center;
  justify-content: center; gap: 0.375rem; background: var(--bg-elevated);
  color: var(--text); line-height: 1.5;
}
.btn:hover { background: var(--border-hover); border-color: var(--border-hover); transform: none; box-shadow: none; }

.btn-primary { background: var(--accent); color: var(--bg); border-color: var(--accent); font-weight: 600; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-secondary { background: var(--blue-bg); color: var(--blue); border-color: var(--blue-border); font-weight: 600; }
.btn-secondary:hover { background: rgba(59,130,246,0.2); border-color: var(--blue); }
.btn-success { background: var(--green-bg); color: var(--green); border-color: var(--green-border); }
.btn-success:hover { background: rgba(34,197,94,0.2); border-color: var(--green); }
.btn-danger { background: var(--red-bg); color: var(--red); border-color: var(--red-border); }
.btn-danger:hover { background: rgba(239,68,68,0.2); border-color: var(--red); }
.btn-warning { background: var(--amber-bg); color: var(--amber); border-color: var(--amber-border); }
.btn-warning:hover { background: rgba(245,158,11,0.2); border-color: var(--amber); }
.btn-logout { background: transparent; color: var(--text-muted); border-color: transparent; padding: 0.375rem 0.75rem; font-size: 0.8125rem; }
.btn-logout:hover { color: var(--text); background: var(--bg-elevated); }

.status-badge, .submission-badge {
  padding: 0.25rem 0.625rem; border-radius: 9999px; font-size: 0.6875rem;
  font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em;
  font-family: 'JetBrains Mono', monospace;
}
.status-locked { background: var(--red-bg); color: var(--red); border: 1px solid var(--red-border); }
.status-opened { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-border); }
.submission-submitted { background: var(--amber-bg); color: var(--amber); border: 1px solid var(--amber-border); }
.submission-verified { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-border); }
.submission-rejected { background: var(--red-bg); color: var(--red); border: 1px solid var(--red-border); }

.login-container {
  background: var(--bg-card); backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 2.5rem; max-width: 420px; margin: 6rem auto; box-shadow: var(--shadow-lg);
}
.login-container h1 { color: var(--text); margin-bottom: 0.25rem; font-size: 1.5rem; font-weight: 700; letter-spacing: -0.03em; }
.subtitle { color: var(--text-muted); margin-bottom: 2rem; font-size: 0.875rem; line-height: 1.5; }
.error-message { background: var(--red-bg); color: var(--red); padding: 0.75rem 1rem; border-radius: var(--radius-sm); margin-bottom: 1.5rem; font-size: 0.8125rem; border: 1px solid var(--red-border); font-weight: 500; }

.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.375rem; font-weight: 500; color: var(--text-secondary); font-size: 0.8125rem; letter-spacing: 0.01em; }
.form-group input, .form-group textarea {
  width: 100%; padding: 0.625rem 0.875rem; border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: 0.875rem; font-family: inherit;
  transition: all var(--transition); background: var(--bg); color: var(--text); line-height: 1.5;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--text-muted); box-shadow: 0 0 0 3px rgba(161,161,170,0.1); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.login-container button[type="submit"] { width: 100%; margin-top: 0.5rem; }
.info-text { text-align: center; color: var(--text-muted); margin-top: 1.5rem; font-size: 0.75rem; letter-spacing: 0.01em; }

.dashboard-container, .admin-dashboard-container, .admin-tasks-container, .admin-submissions-container, .task-detail-container {
  background: var(--bg-card); backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 2rem; box-shadow: var(--shadow-lg);
}
.dashboard-container h1, .admin-dashboard-container h1, .admin-tasks-container h1, .admin-submissions-container h1, .task-detail-container h1 {
  color: var(--text); margin-bottom: 0.25rem; font-size: 1.5rem; font-weight: 700; letter-spacing: -0.03em;
}

.empty-state { text-align: center; padding: 4rem 2rem; color: var(--text-muted); }
.empty-state p { font-size: 0.9375rem; }

.tasks-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.task-card { background: var(--bg); border-radius: var(--radius); padding: 1.25rem; border: 1px solid var(--border); transition: all var(--transition); display: flex; flex-direction: column; }
.task-card:hover { border-color: var(--border-hover); box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.task-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 0.75rem; gap: 0.75rem; }
.task-header h3 { color: var(--text); font-size: 0.9375rem; font-weight: 600; letter-spacing: -0.01em; line-height: 1.4; }
.task-description { color: var(--text-muted); margin-bottom: 1rem; line-height: 1.6; font-size: 0.8125rem; flex: 1; }
.task-footer { display: flex; justify-content: space-between; align-items: center; gap: 0.75rem; padding-top: 0.75rem; border-top: 1px solid var(--border); }

.back-link { color: var(--text-secondary); text-decoration: none; display: inline-flex; align-items: center; gap: 0.375rem; margin-bottom: 1.5rem; font-size: 0.8125rem; font-weight: 500; transition: color var(--transition); }
.back-link:hover { color: var(--text); }

.task-detail-container .task-header { background: var(--bg); padding: 1.25rem; border-radius: var(--radius); margin-bottom: 1.5rem; border: 1px solid var(--border); }
.task-detail-container .task-header h1 { color: var(--text); margin: 0; }
.task-description h2 { color: var(--text); margin-bottom: 0.75rem; font-size: 1rem; font-weight: 600; }
.task-description p { color: var(--text-secondary); line-height: 1.7; font-size: 0.875rem; }

.submission-section { margin-top: 2rem; }
.submission-section h2 { color: var(--text); margin-bottom: 0.75rem; font-size: 1rem; font-weight: 600; }
.submission-card { background: var(--bg); border-radius: var(--radius); padding: 1.25rem; border: 1px solid var(--border); }
.screenshot-preview { max-width: 100%; border-radius: var(--radius-sm); margin: 1rem 0; border: 1px solid var(--border); }
.submission-date { color: var(--text-muted); font-size: 0.75rem; font-family: 'JetBrains Mono', monospace; }

.admin-notes { margin-top: 1rem; padding: 1rem; background: var(--amber-bg); border: 1px solid var(--amber-border); border-radius: var(--radius-sm); }
.admin-notes h3, .admin-notes h4 { color: var(--amber); margin-bottom: 0.5rem; font-size: 0.8125rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.admin-notes p { color: var(--text-secondary); font-size: 0.875rem; line-height: 1.6; }

.upload-section { margin-top: 2rem; }
.upload-section h2 { color: var(--text); margin-bottom: 0.375rem; font-size: 1rem; font-weight: 600; }
.upload-instructions { color: var(--text-muted); margin-bottom: 1.5rem; font-size: 0.8125rem; }

.locked-message { margin-top: 2rem; padding: 1.5rem; background: var(--amber-bg); border: 1px solid var(--amber-border); border-radius: var(--radius); text-align: center; }
.locked-message p { color: var(--amber); font-size: 0.875rem; font-weight: 500; }

.admin-nav { display: flex; gap: 0.75rem; margin: 1.5rem 0; }
.admin-nav .btn { padding: 0.625rem 1.25rem; font-size: 0.875rem; }
.stats-section { margin: 1.5rem 0; }
.stats-section h2 { color: var(--text); margin-bottom: 1rem; font-size: 1rem; font-weight: 600; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0.75rem; }
.stat-card { background: var(--bg); border-radius: var(--radius); padding: 1.25rem; border: 1px solid var(--border); text-align: left; }
.stat-card h3 { color: var(--text-muted); font-size: 0.6875rem; margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--text); letter-spacing: -0.03em; font-family: 'JetBrains Mono', monospace; }

.recent-submissions { margin-top: 2rem; }
.recent-submissions h2 { color: var(--text); margin-bottom: 0.75rem; font-size: 1rem; font-weight: 600; }
.submissions-list { display: flex; flex-direction: column; gap: 0.5rem; }
.submission-item { background: var(--bg); border-radius: var(--radius); padding: 1rem; display: flex; justify-content: space-between; align-items: center; border: 1px solid var(--border); }
.submission-item h4 { color: var(--text); margin-bottom: 0.25rem; font-size: 0.875rem; }
.submission-item p { color: var(--text-muted); font-size: 0.75rem; }
.submission-item .submission-info { margin-bottom: 0; padding: 0; background: transparent; border-radius: 0; }

.view-all-link { display: inline-block; margin-top: 1rem; color: var(--text-secondary); text-decoration: none; font-size: 0.8125rem; font-weight: 500; transition: color var(--transition); }
.view-all-link:hover { color: var(--text); }

.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }
.page-header h1 { color: var(--text); margin: 0; }

.create-task-section { background: var(--bg); border-radius: var(--radius); padding: 1.5rem; margin-bottom: 2rem; border: 1px solid var(--border); }
.create-task-section h2 { color: var(--text); margin-bottom: 1rem; font-size: 1rem; font-weight: 600; }
.tasks-list-section h2 { color: var(--text); margin-bottom: 1rem; font-size: 1rem; font-weight: 600; }
.tasks-list { display: flex; flex-direction: column; gap: 1rem; }

.task-meta { margin: 1rem 0; padding: 1rem; background: var(--bg-subtle); border-radius: var(--radius-sm); border: 1px solid var(--border); }
.task-meta p { color: var(--text-muted); font-size: 0.75rem; margin-bottom: 0.25rem; font-family: 'JetBrains Mono', monospace; }

.task-actions { display: flex; gap: 0.5rem; }
.task-actions form { display: inline; }
.task-actions button { width: auto; }

.submission-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.submission-header h3 { color: var(--text); font-size: 0.9375rem; }

.submission-info { margin-bottom: 1rem; padding: 1rem; background: var(--bg-subtle); border-radius: var(--radius-sm); border: 1px solid var(--border); }
.submission-info p { color: var(--text-muted); font-size: 0.75rem; margin-bottom: 0.25rem; }
.submission-info p strong { color: var(--text-secondary); }

.screenshot-section { margin: 1rem 0; }
.screenshot-section h4 { color: var(--text); margin-bottom: 0.5rem; font-size: 0.8125rem; font-weight: 600; }

.review-actions { margin-top: 1rem; padding: 1rem; background: var(--amber-bg); border: 1px solid var(--amber-border); border-radius: var(--radius-sm); }
.review-actions h4 { color: var(--amber); margin-bottom: 1rem; font-size: 0.8125rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }

.button-group { display: flex; gap: 0.5rem; }
.button-group button { width: auto; }

@media (max-width: 768px) {
  .header-content { padding: 0.875rem 1rem; }
  main { padding: 0 1rem; }
  .tasks-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .button-group { flex-direction: column; }
  .login-container { margin: 3rem 1rem; padding: 1.5rem; }
}