:root {
    --g-blue: #4285F4;
    --g-red: #EA4335;
    --g-yellow: #FBBC05;
    --g-green: #34A853;
    --text-main: #202124;
    --text-secondary: #5F6368;
    --border-color: #E5E7EB;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 500px;
    padding: 20px;
    box-sizing: border-box;
}

.card {
    background-color: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
    padding: 40px;
}

.google-accent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, 
        var(--g-blue) 0%, var(--g-blue) 25%, 
        var(--g-red) 25%, var(--g-red) 50%, 
        var(--g-yellow) 50%, var(--g-yellow) 75%, 
        var(--g-green) 75%, var(--g-green) 100%);
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    margin: 0 0 8px 0;
    font-size: 24px;
    font-weight: 700;
}

header p {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.input-group {
    margin-bottom: 24px;
}

.input-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.input-group input {
    width: 100%;
    box-sizing: border-box;
    padding: 14px 16px;
    font-size: 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    outline: none;
    transition: border-color 0.2s ease;
    font-family: 'Inter', sans-serif;
}

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

button {
    width: 100%;
    padding: 16px;
    background-color: var(--g-blue);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

button:hover {
    background-color: #3367d6;
}

button:active {
    transform: scale(0.98);
}

.hidden {
    display: none !important;
}

/* Loading State */
#loading {
    text-align: center;
    margin-top: 30px;
}

#loading p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 16px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(66, 133, 244, 0.2);
    border-top-color: var(--g-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Verification View */
.verification-card {
    text-align: center;
}

.verify-icon {
    width: 64px;
    height: 64px;
    background-color: rgba(52, 168, 83, 0.1);
    color: var(--g-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px auto;
}

.verify-icon svg {
    width: 32px;
    height: 32px;
}

.verification-card h2 {
    margin: 0 0 8px 0;
    font-size: 22px;
}

.verification-card .subtitle {
    margin: 0 0 32px 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.verify-details {
    background-color: #f8f9fa;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 32px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.detail-row:first-child {
    padding-top: 0;
}

.label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
}

.value {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-main);
}

.value.valid {
    color: var(--g-green);
}

.verify-footer {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}