:root {
    --mda-red: #d32f2f;
    --mda-dark: #b71c1c;
    --paramedic-orange: #f57c00;
    --bg-color: #f0f2f5;
    --card-bg: rgba(255, 255, 255, 0.9);
    --text-main: #2c3e50;
    --text-muted: #7f8c8d;
    --border-color: rgba(0,0,0,0.1);
    --glow-color: rgba(211, 47, 47, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
    --radius: 16px;
}

/* Dark Mode Variables */
body.dark-mode {
    --bg-color: #121212;
    --card-bg: rgba(30, 30, 30, 0.85);
    --text-main: #e0e0e0;
    --text-muted: #aaaaaa;
    --border-color: rgba(255,255,255,0.1);
    --glow-color: rgba(245, 124, 0, 0.4);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; outline: none; }
body { 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
    background-color: var(--bg-color); 
    color: var(--text-main); 
    padding-bottom: 20px; 
    transition: background 0.3s;
    background-image: radial-gradient(circle at 10% 20%, rgba(211, 47, 47, 0.05) 0%, transparent 20%), 
                      radial-gradient(circle at 90% 80%, rgba(245, 124, 0, 0.05) 0%, transparent 20%);
}

.hidden { display: none !important; }
.container { max-width: 1000px; margin: 0 auto; padding: 10px; min-height: 100vh; position: relative; }

/* Glassmorphism Classes */
.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: var(--glass-shadow);
}
.glass-panel-sm {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
}

/* Animations */
.fade-in { animation: fadeIn 0.4s ease-in; }
.slide-up { animation: slideUp 0.3s ease-out; }
.heartbeat { animation: beat 1.5s infinite; }
.pulse-text { animation: pulseText 1.5s infinite alternate; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes beat { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.1); } }
@keyframes pulseText { from { opacity: 0.6; transform: scale(0.98); } to { opacity: 1; transform: scale(1.02); color: var(--mda-red); } }

/* Theme Toggle */
.theme-toggle { position: fixed; bottom: 20px; left: 20px; background: var(--card-bg); border: 2px solid var(--border-color); font-size: 1.5rem; cursor: pointer; z-index: 100; padding: 10px; border-radius: 50%; box-shadow: 0 4px 15px rgba(0,0,0,0.2); transition: 0.3s; }
.theme-toggle:hover { transform: scale(1.1); box-shadow: 0 0 15px var(--glow-color); }

/* Loader */
#loading-screen { position: fixed; inset: 0; background: var(--bg-color); display: flex; flex-direction: column; justify-content: center; align-items: center; z-index: 9999; color: var(--text-main); }
.loader { border: 5px solid rgba(0,0,0,0.1); border-top: 5px solid var(--mda-red); border-radius: 50%; width: 60px; height: 60px; animation: spin 1s linear infinite; margin-bottom: 20px; }
@keyframes spin { 100% { transform: rotate(360deg); } }

/* Home */
header { text-align: center; margin: 30px 0; }
.logo-area { font-size: 3.5rem; margin-bottom: 5px; text-shadow: 0 0 20px rgba(211, 47, 47, 0.3); }
.subtitle { color: var(--text-muted); font-size: 0.9rem; }

.menu-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.menu-card { 
    padding: 30px; text-align: center; 
    transition: transform 0.2s, box-shadow 0.2s; 
    border-top: 5px solid transparent; 
}
.menu-card:hover { transform: translateY(-5px); box-shadow: 0 10px 30px var(--glow-color); }
.simulator-entry { border-color: var(--mda-red); }
.database-entry { border-color: var(--paramedic-orange); }

/* Settings */
.settings-container { padding: 25px; max-width: 700px; margin: 0 auto; }
.centered-bar { text-align: center; margin-bottom: 15px; }
.setting-group { margin-bottom: 15px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
.compact-group { margin-bottom: 10px; padding-bottom: 5px; }
.setting-row { display: grid; gap: 10px; }
.three-col { grid-template-columns: 1fr 1fr 1fr; }
.centered-content { display: flex; flex-direction: column; align-items: center; }
.center-flex { justify-content: center; align-items: center; gap: 5px; }

.challenge-group { background: rgba(245, 124, 0, 0.05); padding: 15px; border-radius: 8px; border: 1px dashed var(--paramedic-orange); }
.chal-item { display: flex; flex-direction: column; margin-bottom: 8px; }
.challenge-label { font-weight: bold; color: var(--paramedic-orange) !important; cursor: pointer; display: flex; align-items: center; gap: 5px; }
.chal-desc { font-size: 0.75rem; color: var(--text-muted); margin-right: 20px; }

.scrollable-checkboxes { max-height: 120px; overflow-y: auto; background: rgba(0,0,0,0.03); padding: 8px; border-radius: 8px; display: grid; grid-template-columns: 1fr 1fr; gap: 5px; color: var(--text-main); }
.smaller-text { font-size: 0.85rem; }
.safety-text { display: block; text-align: center; color: var(--text-muted); margin-bottom: 10px; font-weight: bold; font-size: 0.9rem; }
.start-area { text-align: center; margin-top: 15px; }

/* Simulator (HUD) */
.simulator-main-panel {
    margin-bottom: 20px;
    overflow: hidden;
}

.question-area {
    background: linear-gradient(180deg, rgba(211, 47, 47, 0.05) 0%, rgba(255,255,255,0) 100%);
    padding: 30px 20px;
    text-align: center;
    border-bottom: 2px solid var(--mda-red);
}

#questionMainText { font-size: 1.6rem; color: var(--mda-red); margin: 5px 0; font-weight: 800; line-height: 1.3; }
#questionSubText { font-size: 1.2rem; color: var(--text-main); margin-top: 15px; font-weight: 600; }
.extra-info { color: var(--text-muted); font-size: 0.9rem; font-style: italic; }

.answers-area { padding: 20px; }
.answers-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }

.option-btn { 
    background: var(--bg-color); border: 1px solid var(--border-color); padding: 12px; border-radius: 12px; 
    font-size: 1rem; cursor: pointer; transition: all 0.2s; min-height: 70px; 
    display: flex; align-items: center; justify-content: center; color: var(--text-main); font-weight: 600;
    text-align: center; word-break: break-word; box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.option-btn:hover { border-color: var(--paramedic-orange); transform: translateY(-2px); box-shadow: 0 5px 15px rgba(245, 124, 0, 0.15); }
.option-btn.correct { background: rgba(40, 167, 69, 0.1); border-color: #28a745; color: #155724; box-shadow: 0 0 10px rgba(40, 167, 69, 0.4); }
.option-btn.wrong { background: rgba(220, 53, 69, 0.1); border-color: #dc3545; color: #721c24; }
body.dark-mode .option-btn.correct { color: #81c784; }
body.dark-mode .option-btn.wrong { color: #e57373; }

/* Modal (Popup Info Card) */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 200;
    display: flex; align-items: center; justify-content: center;
    animation: fadeIn 0.2s;
}
.info-card-modal {
    background: var(--card-bg);
    width: 90%; max-width: 450px;
    padding: 25px;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
    border-top: 6px solid var(--paramedic-orange);
    color: var(--text-main);
    position: relative;
    max-height: 85vh;
    overflow-y: auto;
}
.close-modal { position: absolute; top: 15px; left: 15px; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-muted); transition: 0.2s; }
.close-modal:hover { color: var(--mda-red); transform: rotate(90deg); }
.info-modal-row { margin-bottom: 10px; font-size: 1rem; border-bottom: 1px solid var(--border-color); padding-bottom: 8px; }

/* Buttons & Controls */
.btn-large { width: 100%; padding: 15px; border: none; border-radius: var(--radius); color: white; font-weight: bold; cursor: pointer; font-size: 1.1rem; transition: 0.2s; box-shadow: 0 4px 10px rgba(0,0,0,0.15); }
.btn-start { background: linear-gradient(135deg, var(--mda-red), #b71c1c); }
.btn-db { background: linear-gradient(135deg, var(--paramedic-orange), #e65100); }
.btn-next { width: 100%; padding: 18px; background: var(--text-main); color: var(--bg-color); border: none; border-radius: var(--radius); cursor: pointer; font-size: 1.2rem; font-weight: bold; box-shadow: 0 5px 15px rgba(0,0,0,0.2); transition: 0.2s; }
.btn-next:hover { transform: scale(1.02); }

.btn-small { padding: 8px 14px; background: #546e7a; color: white; border: none; border-radius: 8px; cursor: pointer; font-size: 0.9rem; transition: 0.2s; }
.btn-quit { background: #37474f; }
.btn-quit:hover { background: #b71c1c; }
.btn-tiny { padding: 4px 8px; font-size: 0.8rem; background: #78909c; color: white; border: none; border-radius: 4px; cursor: pointer; margin-left: 5px; transition: 0.2s; }
.btn-text { background: none; border: none; color: var(--text-muted); cursor: pointer; margin-top: 10px; text-decoration: underline; font-size: 0.9rem; }

.glow-anim { animation: glow 2s infinite alternate; }
.glow-hover:hover { box-shadow: 0 0 15px var(--glow-color); }

/* Progress & Stats */
.sim-header { position: sticky; top: 0; z-index: 10; padding: 10px 0; margin-bottom: 15px; }
.progress-container { width: 100%; background: rgba(0,0,0,0.1); height: 8px; border-radius: 4px; overflow: hidden; margin-right: 10px; }
.progress-bar { height: 100%; background: var(--paramedic-orange); transition: width 0.3s; box-shadow: 0 0 5px var(--paramedic-orange); }
.progress-info { display: flex; align-items: center; margin-bottom: 8px; color: var(--text-muted); font-weight: bold; font-size: 0.9rem; }
.sim-stats { display: flex; justify-content: space-between; align-items: center; }
.timer-badge { font-family: monospace; font-size: 1.4rem; font-weight: bold; color: var(--mda-red); text-shadow: 0 0 5px rgba(211,47,47,0.3); }
.score-tag { font-weight: bold; margin-left: 10px; }
.score-tag.correct { color: #28a745; }
.score-tag.wrong { color: #dc3545; }

/* Database Table */
.drugs-list-wrapper { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border-color); }
.column-toggles { display: flex; gap: 10px; flex-wrap: wrap; font-size: 0.85rem; margin-top: 5px; color: var(--text-muted); }
.drugs-table { width: 100%; border-collapse: collapse; margin-top: 0; }
.drugs-table th, .drugs-table td { padding: 12px; text-align: right; border-bottom: 1px solid var(--border-color); color: var(--text-main); font-size: 0.95rem; }
.drugs-table th { background: var(--text-main); color: var(--bg-color); position: sticky; top: 0; z-index: 2; }
.drugs-table tr:hover { background: rgba(255,255,255,0.05); }
.hidden-col { display: none; }

/* Legal Footer */
.legal-footer { text-align: center; margin-top: 40px; padding: 20px; font-size: 0.75rem; color: var(--text-muted); border-top: 1px solid var(--border-color); line-height: 1.4; }

/* Mobile */
@media (max-width: 768px) {
    .setting-row { grid-template-columns: 1fr; }
    .three-col { grid-template-columns: 1fr; }
    .checkbox-grid { grid-template-columns: 1fr; }
    .answers-grid { grid-template-columns: 1fr; }
    .mobile-col { flex-direction: column; align-items: flex-start; gap: 5px; }
    .drugs-table thead { display: none; }
    .drugs-table tr { display: block; border-bottom: 2px solid var(--border-color); margin-bottom: 10px; padding: 10px; }
    .drugs-table td { display: block; text-align: right; padding-right: 10px; position: relative; padding-left: 10px; border: none; }
    .drugs-table td::before { content: attr(data-label); font-weight: bold; color: var(--paramedic-orange); display: block; margin-bottom: 2px; }
    .drugs-table td.hidden-col { display: none; }
}