:root {
    --primary-color: #27ae60;
    --secondary-color: #f39c12;
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

.background-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-color);
    top: -100px;
    left: -100px;
    animation: drift 10s infinite alternate ease-in-out;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary-color);
    bottom: -50px;
    right: -50px;
    animation: drift 12s infinite alternate-reverse ease-in-out;
}

@keyframes drift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px 30px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    text-align: center;
    transition: transform 0.3s ease;
}

.glass-panel:hover {
    transform: translateY(-5px);
}

.logo-container h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 5px;
    letter-spacing: -1px;
}

.logo-container span {
    color: var(--primary-color);
}

.tagline {
    color: #cbd5e1;
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.login-content h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.login-content p {
    color: #94a3b8;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 30px;
}

.btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    background-color: white;
    color: #333;
    border: none;
    padding: 14px 20px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-google:hover {
    background-color: #f8fafc;
    transform: scale(1.02);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.btn-google:active {
    transform: scale(0.98);
}

.google-icon {
    width: 24px;
    height: 24px;
}

.hidden {
    display: none !important;
}

.loading {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s infinite linear;
}

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