:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --accent: #38bdf8;
    --text-white: #f8fafc;
    --text-muted: #94a3b8;
    --error: #f87171;
}

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

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

.login-wrapper {
    width: 100%;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.login-card {
    background-color: var(--card-bg);
    width: 100%;
    max-width: 400px; /* Tamaño máximo en escritorio */
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.05);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.brand-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 10px;
}

.login-header h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.login-header h1 span { color: var(--accent); }

.login-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ALERTAS */
.alert-error {
    background: rgba(248, 113, 113, 0.1);
    color: var(--error);
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--error);
    font-size: 0.85rem;
    margin-bottom: 20px;
    text-align: center;
}

/* FORMULARIO */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.input-container i {
    position: absolute;
    left: 15px;
    color: var(--text-muted);
}

.input-container input {
    width: 100%;
    padding: 14px 14px 14px 45px; /* Espacio para el icono */
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    color: white;
    font-size: 1rem; /* Importante: 16px+ evita zoom automático en iPhone */
    transition: border-color 0.3s;
}

.input-container input:focus {
    outline: none;
    border-color: var(--accent);
}

/* BOTÓN */
.btn-login {
    width: 100%;
    padding: 14px;
    background-color: var(--accent);
    border: none;
    border-radius: 8px;
    color: #0f172a;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    transition: opacity 0.3s;
}

.btn-login:hover { opacity: 0.9; }

.login-footer {
    margin-top: 25px;
    text-align: center;
}

.login-footer a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
}

.login-footer a:hover { color: var(--accent); }

/* Ajustes específicos para móviles pequeños */
@media (max-width: 380px) {
    .login-card {
        padding: 30px 20px;
    }
}