/* Google UI Clone Styles - Premium Polished Version */
:root {
    --google-blue: #1a73e8;
    --google-gray: #dadce0;
    --google-text: #202124;
    --google-subtext: #5f6368;
    --google-error: #d93025;
    --card-shadow: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
}

body {
    font-family: 'Roboto', 'Segoe UI', Tahoma, sans-serif;
    background-color: #fff;
    color: var(--google-text);
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.google-container {
    width: 100%;
    max-width: 450px;
    padding: 2.5rem;
    border: 1px solid var(--google-gray);
    border-radius: 8px;
    background: #fff;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
    .google-container {
        border: none;
        padding: 1.5rem;
    }
}

.google-logo {
    height: 38px;
    margin-bottom: 0.75rem;
}

h1 {
    font-family: 'Google Sans', 'Roboto', sans-serif;
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--google-text);
}

.sub-header {
    font-size: 1rem;
    color: var(--google-text);
    margin-bottom: 2.5rem;
}

/* Material Floating Labels Refined */
.form-floating > .form-control {
    border: 1px solid var(--google-gray);
    border-radius: 4px;
    height: 56px;
    font-size: 1rem;
    transition: border 0.2s, box-shadow 0.2s;
}

.form-floating > .form-control:focus {
    border: 2px solid var(--google-blue);
    box-shadow: none;
    padding-top: 1.625rem;
    padding-bottom: 0.625rem;
}

.form-floating > label {
    padding-left: 0.75rem;
    color: var(--google-subtext);
}

/* Gmail Icon Overlay */
.gmail-icon-overlay {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    z-index: 5;
    opacity: 0.8;
}

/* Buttons */
.btn-google-primary {
    background-color: var(--google-blue);
    color: white;
    padding: 0.6rem 1.5rem;
    font-weight: 500;
    border-radius: 4px;
    border: none;
    letter-spacing: 0.25px;
    transition: background 0.2s, box-shadow 0.2s;
}

.btn-google-primary:hover {
    background-color: #1557b0;
    box-shadow: var(--card-shadow);
    color: white;
}

.btn-link {
    color: var(--google-blue);
    font-weight: 500;
    text-decoration: none;
    font-size: 0.875rem;
    border-radius: 4px;
    padding: 0.5rem;
}

.btn-link:hover {
    background-color: rgba(26, 115, 232, 0.04);
}

/* User Pill */
.user-pill {
    padding: 5px 12px;
    border: 1px solid var(--google-gray);
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 2rem;
    font-size: 0.875rem;
}

/* Phase Transitions */
.form-phase {
    animation: googleEntrance 0.3s ease-out;
}

@keyframes googleEntrance {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Footer (Admin Link etc) */
.footer-links {
    position: fixed;
    bottom: 20px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 3rem;
    font-size: 0.75rem;
    color: var(--google-subtext);
}