:root {
    --bg: #f8fafc;
    --bg-secondary: #ffffff;
    --fg: #1e293b;
    --fg-secondary: #64748b;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
    --positive: #10b981;
    --negative: #ef4444;
    --warning: #f59e0b;
    --klass-a: #dc2626;
    --klass-b: #ea580c;
    --klass-c: #ca8a04;
    --legal: #059669;
    --illegal: #dc2626;
    --rx: #7c3aed;
    --header-bg: #ffffff;
    --input-bg: #f1f5f9;
    --overlay-bg: rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] {
    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --fg: #f1f5f9;
    --fg-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --card-bg: #1e293b;
    --card-border: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
    --header-bg: #1e293b;
    --input-bg: #334155;
    --overlay-bg: rgba(0, 0, 0, 0.7);
}

[data-theme="synthwave"] {
    --bg: #1a1033;
    --bg-secondary: #2d1b4e;
    --fg: #f0e6ff;
    --fg-secondary: #b8a9c9;
    --accent: #ff00ff;
    --accent-hover: #ff66ff;
    --card-bg: #2d1b4e;
    --card-border: #4a2875;
    --shadow: rgba(255, 0, 255, 0.2);
    --positive: #00ffcc;
    --negative: #ff3366;
    --warning: #ffcc00;
    --header-bg: #1a1033;
    --input-bg: #3d2060;
    --overlay-bg: rgba(26, 16, 51, 0.9);
}

[data-theme="matrix"] {
    --bg: #000000;
    --bg-secondary: #0a0a0a;
    --fg: #00ff00;
    --fg-secondary: #00aa00;
    --accent: #00ff00;
    --accent-hover: #33ff33;
    --card-bg: #0a0f0a;
    --card-border: #003300;
    --shadow: rgba(0, 255, 0, 0.1);
    --positive: #00ff00;
    --negative: #ff3333;
    --warning: #ffff00;
    --header-bg: #000000;
    --input-bg: #001a00;
    --overlay-bg: rgba(0, 0, 0, 0.9);
}

[data-theme="dracula"] {
    --bg: #282a36;
    --bg-secondary: #21222c;
    --fg: #f8f8f2;
    --fg-secondary: #6272a4;
    --accent: #bd93f9;
    --accent-hover: #ffb86c;
    --card-bg: #44475a;
    --card-border: #6272a4;
    --shadow: rgba(0, 0, 0, 0.4);
    --positive: #50fa7b;
    --negative: #ff5555;
    --warning: #ffb86c;
    --klass-a: #ff5555;
    --klass-b: #ffb86c;
    --klass-c: #f1fa8c;
    --legal: #50fa7b;
    --illegal: #ff5555;
    --rx: #bd93f9;
    --header-bg: #21222c;
    --input-bg: #1e1f29;
    --overlay-bg: rgba(0, 0, 0, 0.8);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--bg);
    color: var(--fg);
    min-height: 100vh;
    transition: background-color 0.4s ease, color 0.4s ease;
}

[data-theme="matrix"] body {
    font-family: 'JetBrains Mono', monospace;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--header-bg);
    border-bottom: 1px solid var(--card-border);
    padding: 12px 16px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    color: var(--accent);
    font-size: 1.6rem;
}

.header-actions { display: flex; gap: 8px; }

.theme-btn, .info-btn {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 2px solid var(--card-border);
    background: var(--card-bg);
    color: var(--fg);
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-btn:hover, .info-btn:hover {
    border-color: var(--accent);
    transform: scale(1.05);
}

.search-input {
    width: 100%;
    padding: 14px 16px;
    border-radius: 12px;
    border: 2px solid var(--card-border);
    background: var(--input-bg);
    color: var(--fg);
    font-size: 1rem;
    font-family: inherit;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
}

.filter-nav {
    padding: 12px 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.filter-scroll { display: flex; gap: 8px; }

.filter-btn {
    padding: 10px 18px;
    border-radius: 20px;
    border: 2px solid var(--card-border);
    background: var(--card-bg);
    color: var(--fg-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.stats-bar {
    display: flex;
    justify-content: center;
    gap: 32px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--card-border);
}

.stat-item { display: flex; flex-direction: column; align-items: center; }
.stat-number { font-size: 1.5rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 0.75rem; color: var(--fg-secondary); text-transform: uppercase; }

.main-content { padding: 16px; min-height: calc(100vh - 200px); }
.preparat-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }

@media (min-width: 480px) { .preparat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px) { .preparat-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .preparat-grid { grid-template-columns: repeat(4, 1fr); } }

.preparat-card {
    background: var(--card-bg);
    border: 2px solid var(--card-border);
    border-radius: 16px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.preparat-card:active { transform: scale(0.98); }
.preparat-card:hover { border-color: var(--accent); }

.card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; }
.card-name { font-size: 1.1rem; font-weight: 700; line-height: 1.2; }

.card-category {
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.card-category.laglig { background: rgba(5, 150, 105, 0.2); color: var(--legal); }
.card-category.olaglig { background: rgba(220, 38, 38, 0.2); color: var(--illegal); }
.card-category.receptbelagd { background: rgba(124, 58, 237, 0.2); color: var(--rx); }

.card-subtitle { font-size: 0.8rem; color: var(--fg-secondary); margin-bottom: 12px; font-style: italic; }

.card-klass {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    padding: 6px 10px;
    border-radius: 8px;
    background: var(--bg);
    margin-bottom: 12px;
}

.card-klass.klass-a { color: var(--klass-a); border: 1px solid var(--klass-a); }
.card-klass.klass-b { color: var(--klass-b); border: 1px solid var(--klass-b); }
.card-klass.klass-c { color: var(--klass-c); border: 1px solid var(--klass-c); }
.card-klass.oklassad { color: var(--fg-secondary); border: 1px solid var(--fg-secondary); }

.card-dose { display: flex; gap: 6px; margin-top: auto; }
.dose-tag { flex: 1; text-align: center; padding: 6px 4px; border-radius: 8px; font-size: 0.7rem; font-weight: 600; }
.dose-tag.svag { background: rgba(16, 185, 129, 0.15); color: var(--positive); }
.dose-tag.normal { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.dose-tag.stark { background: rgba(239, 68, 68, 0.15); color: var(--negative); }

/* Theme Panel */
.theme-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border-top-left-radius: 24px;
    border-top-right-radius: 24px;
    padding: 24px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 200;
}

.theme-panel.active { transform: translateY(0); }
.theme-panel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.close-panel {
    width: 40px; height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--bg);
    color: var(--fg);
    font-size: 1.5rem;
    cursor: pointer;
}
.theme-options { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
@media (max-width: 400px) { .theme-options { grid-template-columns: repeat(3, 1fr); } }

.theme-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px 8px;
    border: 2px solid var(--card-border);
    border-radius: 12px;
    background: transparent;
    cursor: pointer;
    color: var(--fg);
}
.theme-option:hover { border-color: var(--accent); }
.theme-option.active { border-color: var(--accent); }

.theme-preview { width: 40px; height: 40px; border-radius: 8px; }
.light-preview { background: linear-gradient(135deg, #f8fafc, #2563eb); }
.dark-preview { background: linear-gradient(135deg, #0f172a, #3b82f6); }
.synthwave-preview { background: linear-gradient(135deg, #1a1033, #ff00ff); }
.matrix-preview { background: linear-gradient(135deg, #000000, #00ff00); }
.dracula-preview { background: linear-gradient(135deg, #282a36, #bd93f9); }
.theme-name { font-size: 0.75rem; font-weight: 600; color: var(--fg-secondary); }

/* Modal */
.modal-overlay, .info-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    z-index: 300;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active, .info-overlay.active { opacity: 1; visibility: visible; }

.modal, .info-modal {
    background: var(--card-bg);
    border-radius: 20px;
    max-width: 600px;
    width: 100%;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.active .modal { transform: translateY(0); }

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px; height: 40px;
    border-radius: 50%;
    border: 2px solid var(--card-border);
    background: var(--bg);
    color: var(--fg);
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 10;
}

.modal-close:hover { background: var(--negative); border-color: var(--negative); color: white; }

.modal-content, .info-modal { padding: 24px; }
.modal-header { margin-bottom: 24px; padding-right: 48px; }
.modal-name { font-size: 1.8rem; font-weight: 700; margin-bottom: 8px; }
.modal-subtitle { font-size: 1rem; color: var(--fg-secondary); font-style: italic; }
.modal-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.modal-section { margin-bottom: 24px; }

.modal-section-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--fg-secondary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-section-title::before {
    content: '';
    width: 4px;
    height: 16px;
    background: var(--accent);
    border-radius: 2px;
}

.dose-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg);
    border-radius: 12px;
    overflow: hidden;
}

.dose-table th, .dose-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--card-border);
}

.dose-table th { background: var(--card-bg); font-weight: 600; font-size: 0.85rem; }
.dose-table tr:last-child td { border-bottom: none; }

.effects-grid { display: grid; gap: 16px; }
.effect-group { background: var(--bg); border-radius: 12px; padding: 16px; }
.effect-group.positive { border-left: 4px solid var(--positive); }
.effect-group.negative { border-left: 4px solid var(--negative); }

.effect-title {
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.effect-title.positive { color: var(--positive); }
.effect-title.negative { color: var(--negative); }

.effect-list { list-style: none; }
.effect-list li { padding: 6px 0; padding-left: 16px; position: relative; font-size: 0.9rem; color: var(--fg-secondary); }
.effect-list li::before { content: '•'; position: absolute; left: 0; color: var(--fg-secondary); }

.warning-box {
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid var(--negative);
    border-radius: 12px;
    padding: 16px;
    color: var(--negative);
    font-weight: 600;
    text-align: center;
}

.info-modal h2 { margin-bottom: 16px; }
.info-modal p { margin-bottom: 12px; color: var(--fg-secondary); }
.info-modal .warning { color: var(--negative); font-weight: 600; }