:root {
    --primary: #4285F4;
    --success: #34A853;
    --warning: #FBBC05;
    --danger: #EA4335;
    --background: #FFFFFF;
    --surface: #F8F9FA;
    --surface-border: #DADCE0;
    --text-main: #202124;
    --text-muted: #5F6368;
    --font-family: 'Roboto', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--surface);
    color: var(--text-main);
    line-height: 1.5;
}

/* Material Design Header */
.header {
    background-color: var(--background);
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header h1 {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-main);
}

.content {
    padding: 16px;
    max-width: 600px;
    margin: 0 auto;
}

/* Material Design Card */
.card {
    background-color: var(--background);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 1px 2px 0 rgba(60,64,67,0.3);
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--surface-border);
    border-radius: 4px;
    font-size: 1rem;
    font-family: var(--font-family);
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    border-width: 2px;
    padding: 11px; /* Adjust for border width */
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    text-transform: uppercase;
    cursor: pointer;
    border: none;
    font-family: var(--font-family);
    transition: background-color 0.2s, box-shadow 0.2s;
    width: 100%;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: #3367D6;
    box-shadow: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
}

.btn-success {
    background-color: var(--success);
    color: white;
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--surface-border);
}

/* Alerts */
.alert {
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 16px;
    font-size: 0.875rem;
}

.alert-danger {
    background-color: #FCE8E6;
    color: #D93025;
}

.alert-success {
    background-color: #CEEAD6;
    color: #137333;
}

/* Utilities */
.text-center { text-align: center; }
.mt-3 { margin-top: 16px; }
.mb-3 { margin-bottom: 16px; }

/* Dashboard Stats */
.stat-card {
    text-align: center;
    padding: 24px;
}
.stat-number {
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--primary);
}
.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}