/* style.css */
:root {
    /* Light Theme */
    --bg-color: #f4f4f9;
    --card-bg: #ffffff;
    --text-color: #333333;
    --nav-bg: #2e7d32; /* Safaricom Green */
    --accent-color: #2e7d32;
    --border-color: #ddd;
    --input-bg: #fff;
    --shadow: 0 4px 10px rgba(0,0,0,0.08);
}

[data-theme="dark"] {
    /* Dark Theme */
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --nav-bg: #1b5e20;
    --accent-color: #66bb6a;
    --border-color: #333;
    --input-bg: #2d2d2d;
    --shadow: 0 4px 10px rgba(0,0,0,0.5);
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
}

.container { max-width: 800px; margin: 0 auto; padding: 20px; }

/* Navigation */
nav {
    background-color: var(--nav-bg);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    position: sticky; top: 0; z-index: 100;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav a { color: white; text-decoration: none; font-weight: bold; font-size: 1.1rem; }
nav a:hover { opacity: 0.9; }

/* Controls */
.controls { display: flex; gap: 10px; align-items: center; }

.theme-btn {
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
}

.currency-selector {
    background: var(--input-bg);
    color: var(--text-color);
    border: none;
    padding: 5px 10px;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
}

/* Grids & Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--text-color);
    transition: transform 0.2s;
    border: 1px solid var(--border-color);
    display: block;
}

.card:hover { transform: translateY(-5px); border-color: var(--accent-color); }
.card h3 { margin-top: 0; color: var(--accent-color); }

/* Calculator Forms */
.calculator-box {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

label { font-weight: 600; display: block; margin-bottom: 8px; font-size: 0.9rem; }

input, select {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    margin-bottom: 20px;
    box-sizing: border-box;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--text-color);
}

input:focus, select:focus { outline: none; border-color: var(--accent-color); }

.btn-action {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 8px;
    cursor: pointer;
    width: 100%;
    font-size: 1rem;
    font-weight: bold;
    margin-top: 10px;
}

/* Results */
.result-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.hidden { display: none; }

/* Ad Space */
.ad-space {
    background-color: var(--border-color);
    opacity: 0.6;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 30px 0;
    border-radius: 8px;
    text-align: center;
    color: var(--text-color);
    border: 1px dashed #999;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 50px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: #888;
}
footer a { color: var(--accent-color); text-decoration: none; }

/* Add to style.css */

.tz-card {
    background: var(--input-bg);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.active-zone {
    border: 2px solid var(--accent-color);
    background: rgba(46, 125, 50, 0.05);
}

.time-display {
    font-size: 2rem;
    font-weight: bold;
    font-family: monospace;
    margin: 10px 0;
    color: var(--text-color);
}

.offset-badge {
    display: inline-block;
    padding: 2px 8px;
    background: #ddd;
    border-radius: 4px;
    font-size: 0.8rem;
    color: #333;
}

[data-theme="dark"] .offset-badge {
    background: #444;
    color: #ccc;
}