:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --font-family: 'Outfit', sans-serif;
}

[data-theme="light"] {
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.logo span {
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.clock {
    font-family: monospace;
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: color 0.2s;
    padding: 0.5rem;
}

.icon-btn:hover {
    color: var(--text-primary);
}

/* Sections */
main {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Live Rates */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.rate-card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

.rate-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.flag {
    font-size: 1.5rem;
}

.card-body {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.change {
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.change.up { color: var(--success-color); }
.change.down { color: var(--danger-color); }
.change.neutral { color: var(--text-secondary); }

.last-update {
    text-align: right;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
}

.panel {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

/* Converter */
.converter-box {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.input-group input {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 1rem;
    border-radius: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    width: 100%;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: var(--accent-color);
}

.currency-selects {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.select-wrapper {
    flex: 1;
}

select {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 0.5rem;
    font-size: 1rem;
    cursor: pointer;
    outline: none;
}

.result-display {
    text-align: center;
    background-color: var(--bg-color);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

#result-amount {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-color);
    line-height: 1.1;
}

#result-currency {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Alarms */
.alarm-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.75rem;
}

.form-row input {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 0.5rem;
    outline: none;
}

.primary-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.primary-btn:hover {
    background-color: var(--accent-hover);
}

.alarms-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 300px;
    overflow-y: auto;
}

.alarm-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: var(--bg-color);
    border-radius: 0.5rem;
    border-left: 4px solid var(--accent-color);
}

.alarm-info {
    font-weight: 500;
}

.delete-alarm-btn {
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.delete-alarm-btn:hover {
    opacity: 1;
}

.text-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    margin-top: 1rem;
    font-size: 0.875rem;
    cursor: pointer;
    text-decoration: underline;
}