/* ======================================================
   ESTILOS BASE - ALMACÉN INDUSTRIAL
   ====================================================== */

/* ----------------------------
   VARIABLES DE COLOR
---------------------------- */
:root {
    --color-principal: #0f4336ff;
    --color-secundario: #ffa421ff;
    --color-secundario-hover: #ffb84d;
    --color-fondo: #f7f7f7;
    --color-texto: #333;
    --color-blanco: #ffffff;
}

/* ----------------------------
   RESET Y BASE
---------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Roboto, Arial, sans-serif;
}

body {
    background-color: var(--color-fondo);
    color: var(--color-texto);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: var(--color-principal);
    font-weight: bold;
    transition: opacity 0.2s;
}

a:hover {
    opacity: 0.85;
}

/* ----------------------------
   HEADER
---------------------------- */
header {
    background-color: var(--color-principal);
    color: var(--color-blanco);
    padding: 1rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

header nav {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

header nav a {
    background-color: var(--color-secundario);
    color: var(--color-principal);
    padding: 6px 12px;
    border-radius: 6px;
    transition: background-color 0.2s, transform 0.1s;
}

header nav a:hover {
    background-color: var(--color-secundario-hover);
    transform: translateY(-1px);
}

/* ----------------------------
   BOTÓN CERRAR SESIÓN
---------------------------- */
.logout-btn {
    background-color: var(--color-secundario) !important;
    color: var(--color-principal) !important;
    font-weight: bold;
}

.logout-btn:hover {
    background-color: var(--color-secundario-hover) !important;
}

/* ----------------------------
   MAIN / SECCIONES
---------------------------- */
main {
    padding: 2rem;
}

section {
    background-color: var(--color-blanco);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

/* ----------------------------
   TABLAS
---------------------------- */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: var(--color-principal);
    color: var(--color-blanco);
}

/* ----------------------------
   FORMULARIOS
---------------------------- */
input[type="text"], input[type="password"], select {
    padding: 0.6rem 0.8rem;
    border: 1px solid #ccc;
    border-radius: 6px;
    width: 100%;
    margin-bottom: 1rem;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus, select:focus {
    border-color: var(--color-secundario);
    outline: none;
    box-shadow: 0 0 5px rgba(255,164,33,0.4);
}

button {
    padding: 0.6rem 1.2rem;
    background-color: var(--color-secundario);
    color: var(--color-principal);
    font-weight: bold;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

button:hover {
    background-color: var(--color-secundario-hover);
    transform: translateY(-1px);
}

/* ----------------------------
   PAGINACIÓN
---------------------------- */
#pagination {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

/* ----------------------------
   LOGIN PAGE
---------------------------- */
.login-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--color-fondo);
}

.login-box {
    background-color: var(--color-blanco);
    padding: 2rem 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 360px;
    text-align: center;
}

.login-box img {
    width: 100px;
    margin-bottom: 1.5rem;
}

.login-box input {
    margin-bottom: 1rem;
}

.login-box button {
    width: 100%;
    margin-top: 0.5rem;
}

.error {
    color: red;
    margin-bottom: 1rem;
}

/* ----------------------------
   RESPONSIVE
---------------------------- */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }

    header nav {
        margin-top: 0.5rem;
    }

    table, th, td {
        font-size: 0.85rem;
    }
}