:root {
    --primary: #3498db;
    --primary-hover: #2980b9;
    --bg-dark: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --input-bg: #0f172a;
    --input-border: #334155;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-main);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    border: 1px solid var(--input-border);
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 28px;
    letter-spacing: 1px;
}

.header h1 span {
    color: var(--primary);
}

.header p {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 5px;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--text-muted);
}

.input-group input {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    color: white;
    font-size: 16px;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.actions {
    margin-bottom: 25px;
    text-align: right;
}

.forgot-link {
    color: var(--text-muted);
    font-size: 13px;
    text-decoration: none;
    transition: color 0.3s;
}

.forgot-link:hover {
    color: var(--primary);
}

.login-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--primary);
    border: none;
    border-radius: 6px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-top: 10px;
}

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

.footer {
    text-align: center;
    margin-top: 20px;
    font-size: 12px;
    color: var(--text-muted);
}