/* Font Import */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

:root {
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --text-color: #333;
    --subtle-text: #666;
    --background-light: #f0f2f5;
    --card-background: #ffffff;
    --border-color: #e0e0e0;
    --error-color: #dc3545;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background-light);
    display: flex;
    font-size: small;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-color);
    overflow: hidden;
}

.login-wrapper {
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-dark), var(--card-background));
    box-sizing: border-box;
}

.login-container {
    background-color: var(--card-background);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 420px;
    text-align: center;
    box-sizing: border-box;
    position: relative;
}

.login-title {
    font-size: 1.5em;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.login-subtitle {
    font-size: 0.8em;
    color: var(--subtle-text);
    margin-bottom: 30px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    position: relative;
    margin-bottom: 0;
}

.input-group input {
    width: 100%;
    padding: 15px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1em;
    color: var(--text-color);
    background-color: transparent;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    box-sizing: border-box;
}

.input-group input:focus::placeholder,
.input-group input:not(:placeholder-shown)::placeholder {
    color: transparent;
}

.input-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

.input-group label {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--subtle-text);
    pointer-events: none;
    transition: 0.3s ease all;
}

.input-group input:focus + label,
.input-group input:not(:placeholder-shown) + label {
    top: -10px;
    font-size: 0.8em;
    color: var(--primary-color);
    background-color: var(--card-background);
    padding: 0 5px;
    left: 8px;
}

.login-button {
    background-color: var(--primary-color);
    color: white;
    height: 48px;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;

    font-weight: 600;
    cursor: pointer;
    width: 100%;
    margin-top: 10px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    letter-spacing: 0.5px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.login-button:hover:not(:disabled) {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.login-button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
    transform: none;
}

.loading-spinner {
    margin-left: 10px;
    font-size: 1.2em;
}

.error-message {
    color: var(--error-color);
    margin-top: 15px;
    font-weight: 600;
    font-size: 0.95em;
    text-align: center;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.error-message.show {
    opacity: 1;
}

.signup-link {
    margin-top: 30px;
    color: var(--subtle-text);
    font-size: 0.9em;
}

.signup-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.signup-link a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

@media (max-width: 480px) {
    .login-container {
        padding: 30px 20px;
        margin: 20px;
    }

    .login-title {
        font-size: 1.8em;
    }

    .login-button {
        padding: 12px 20px;
        font-size: 1em;
    }
}