/* Paleta de Colores Extraída del Logo Corporativo */
:root {
    --bg-color: #f0f4f8;
    --card-bg: #ffffff;
    
    /* Identidad de marca */
    --brand-blue: #0A256B;      /* Azul principal de las letras y ondas */
    --brand-blue-light: #1E46A3;/* Variación interactiva */
    --brand-yellow: #F4C400;    /* Amarillo vibrante del logo */
    --brand-green: #00A846;     /* Verde de la flama/hoja central */
    
    --text-main: #0F172A;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    --radius: 16px;
    --transition: all 0.25s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background: linear-gradient(135deg, #f0f4f8 0%, #dbeafe 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* Tarjeta contenedora con barra superior de color */
.login-container {
    background: var(--card-bg);
    width: 100%;
    max-width: 420px;
    border-radius: var(--radius);
    box-shadow: 0 20px 25px -5px rgba(10, 37, 107, 0.08), 0 10px 10px -5px rgba(10, 37, 107, 0.04);
    position: relative;
    overflow: hidden;
    padding: 40px 35px;
}

/* Detalle estético superior tricolor */
.brand-accent-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: linear-gradient(to right, var(--brand-blue) 40%, var(--brand-green) 40% 70%, var(--brand-yellow) 70%);
}

/* Encabezado y Logo */
.login-header {
    text-align: center;
    margin-bottom: 35px;
}

.logo-placeholder {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.logo-text-blue { color: var(--brand-blue); }
.logo-text-green { color: var(--brand-green); }
.logo-text-yellow { color: var(--brand-yellow); }

.login-header h2 {
    color: var(--brand-blue);
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 700;
    margin-bottom: 6px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Formulario e Inputs */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.label-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

label {
    color: var(--brand-blue);
    font-size: 13px;
    font-weight: 600;
}

.forgot-link, .login-footer a {
    color: var(--brand-blue-light);
    font-size: 13px;
    text-decoration: none;
    font-weight: 500;
}

.forgot-link:hover, .login-footer a:hover {
    color: var(--brand-blue);
    text-decoration: underline;
}

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

.input-wrapper i {
    position: absolute;
    left: 14px;
    color: var(--text-muted);
    font-size: 18px;
    transition: var(--transition);
}

.input-wrapper input {
    width: 100%;
    padding: 12px 14px 12px 42px;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    color: var(--text-main);
    background-color: #f8fafc;
    outline: none;
    transition: var(--transition);
}

/* Estados de foco interactivos con colores del logo */
.input-wrapper input:focus {
    border-color: var(--brand-green);
    background-color: #ffffff;
    box-shadow: 0 0 0 4px rgba(0, 168, 70, 0.12);
}

.input-wrapper input:focus + i {
    color: var(--brand-green);
}

/* Elemento Checkbox */
.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--brand-blue);
    cursor: pointer;
}

.remember-me label {
    color: var(--text-muted);
    font-weight: 400;
    font-size: 13px;
    cursor: pointer;
}

/* Botón de envío con comportamiento de escala */
.submit-btn {
    background-color: var(--brand-blue);
    color: #ffffff;
    border: none;
    padding: 14px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 8px;
    box-shadow: 0 4px 6px -1px rgba(10, 37, 107, 0.2);
}

.submit-btn:hover {
    background-color: var(--brand-blue-light);
    box-shadow: 0 10px 15px -3px rgba(10, 37, 107, 0.3);
}

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

/* Footer corporativo */
.login-footer {
    text-align: center;
    margin-top: 35px;
    border-top: 1px dashed var(--border-color);
    padding-top: 20px;
    color: var(--text-muted);
    font-size: 13px;
}