/* Global Styles */
:root {
    /* Light theme variables */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #666666;
    --accent-primary: #4CAF50;
    --accent-secondary: #2196F3;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --hover-shadow: rgba(0, 0, 0, 0.15);
    --input-bg: #f8f9fa;
    --disabled-bg: #f1f1f1;
    --link-bg: #e3f2fd;
}

[data-theme="dark"] {
    /* Dark theme variables */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --accent-primary: #66bb6a;
    --accent-secondary: #42a5f5;
    --border-color: #404040;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --hover-shadow: rgba(0, 0, 0, 0.4);
    --input-bg: #333333;
    --disabled-bg: #2a2a2a;
    --link-bg: #1e3a5f;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

label {
    display: block;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.1em;
}

datalist, input {
    width: 100%;
    padding: 12px;
    margin-bottom: 20px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1em;
    transition: all 0.3s ease;
    background-color: var(--input-bg);
    color: var(--text-primary);
}

datalist:focus, input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.2);
}

datalist {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Dropdown specific styles */
datalist option {
    padding: 12px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

datalist option:hover {
    background-color: var(--accent-primary);
    color: white;
}

/* Responsive styles for dropdown */
@media (max-width: 600px) {
    datalist, input {
        padding: 10px;
        font-size: 0.95em;
        margin-bottom: 15px;
    }
    
    datalist {
        background-size: 14px;
        padding-right: 35px;
    }
}

@media (max-width: 400px) {
    datalist, input {
        padding: 8px;
        font-size: 0.9em;
        margin-bottom: 12px;
    }
    
    datalist {
        background-size: 12px;
        padding-right: 30px;
    }
}

input[type="number"] {
    -moz-appea: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[disabled] {
    background-color: var(--disabled-bg);
    cursor: not-allowed;
    opacity: 0.8;
}

/* Button Styles */
button {
    background-color: var(--accent-primary);
    color: white;
    padding: 14px 28px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    margin-right: 10px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

button:hover {
    background-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--shadow-color);
    filter: brightness(1.1);
}

button:active {
    transform: translateY(0);
}

/* Navigation Links */
.nav-links {
    margin-top: 20px;
    display: flex;
    gap: 15px;
}

a {
    display: inline-block;
    color: var(--accent-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 10px;
    transition: all 0.3s ease;
    background-color: var(--link-bg);
}

a:hover {
    background-color: var(--accent-secondary);
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px;
    border-radius: 50%;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: rotate(30deg);
    border-color: var(--accent-primary);
}

/* Responsive Design */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    
    button {
        width: 100%;
        margin-bottom: 10px;
    }
    
    .nav-links {
        flex-direction: column;
    }
    
    a {
        text-align: center;
    }
    
    .theme-toggle {
        top: 10px;
        right: 10px;
    }
}