:root {
    --color-background: #1a1f2b;
    --color-surface: #242935;
    --color-primary: #2b6cb0;
    --color-accent: #4299e1;
    --color-text: #e8eaed;
    --color-text-secondary: #9ba1a6;
    --color-error: #ff5d5d;
}

body {
    background-color: var(--color-background);
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-background);
    padding: 20px;
    color: var(--color-text);
}

.login-card {
    background: var(--color-surface);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.brand h1 {
    color: var(--color-text);
    font-size: 2.5em;
    margin: 0;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    color: var(--color-text);
    margin-bottom: 10px;
}

p {
    color: var(--color-text-secondary);
    margin-bottom: 30px;
}

.input-group {
    position: relative;
    /* margin-bottom: 20px; */
}

input {
    width: 100%;
    padding: 15px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s;
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text);
}

label {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    pointer-events: none;
    transition: all 0.3s;
    padding: 0 5px;
}

input:focus,
input:valid {
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.1);
}

input:focus + label,
input:valid + label {
    top: 0;
    font-size: 14px;
    color: var(--color-primary);
    background: var(--color-surface);
}

button {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-text);
    padding: 15px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79, 157, 166, 0.3);
}

.icon {
    font-size: 3em;
    margin: 20px 0;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

div.error-message {
    color: var(--color-error);
    border-radius: 8px;
    font-size: 16px;
}

div.card {
    cursor: pointer;
    transition: box-shadow 0.3s, transform 0.3s;
}

div.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79, 157, 166, 0.3);
}

span.error {
    color: var(--color-error);
    font-size: 14px;
    /* margin-top: 10px; */
    display: block;
    height: 14px;
}