/* css/styles.css */
:root {
    --primary: #c0392b; /* Rojo Corporativo */
    --secondary: #2c3e50; /* Azul Oscuro */
    --accent: #e67e22; /* Naranja Alerta */
    --success: #27ae60;
    --bg-light: #f4f6f8;
    --text-dark: #333;
    --gradient: linear-gradient(135deg, #c0392b 0%, #e74c3c 100%);
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-light);
    margin: 0;
    padding: 0;
    color: var(--text-dark);
    -webkit-tap-highlight-color: transparent;
}

/* --- HEADER UNIFICADO --- */
.app-header {
    background: var(--gradient);
    color: white;
    padding: 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.header-title {
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 0.5px;
}

/* --- CONTENEDORES --- */
.container {
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 80px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 20px;
}

/* --- FORMULARIOS --- */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: bold;
    color: #7f8c8d;
    margin-bottom: 5px;
    text-transform: uppercase;
}

input, select, textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    box-sizing: border-box;
    transition: border 0.3s;
}

input:focus, select:focus {
    border-color: var(--primary);
    outline: none;
}

/* --- BOTONES --- */
.btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    font-size: 16px;
    color: white;
    background-color: var(--secondary);
    transition: transform 0.1s, opacity 0.2s;
}

.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--gradient); }
.btn-success { background-color: var(--success); }
.btn-outline { background: transparent; border: 2px solid white; }

/* --- GRID MENÚ --- */
.menu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.menu-item {
    background: white;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: all 0.2s;
    border-bottom: 4px solid transparent;
    font-size: 14px;
    font-weight: bold;
}

.menu-item:hover { transform: translateY(-3px); }
.menu-item i { font-size: 32px; margin-bottom: 10px; display: block; }

@media screen and (max-width: 480px) {
    .menu-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .menu-item {
        padding: 15px 8px;
        font-size: 12px;
    }
    .menu-item i { font-size: 28px; margin-bottom: 6px; }
}

/* COLORES MÓDULOS */
.mod-agenda { border-color: #3498db; color: #3498db; }
.mod-clientes { border-color: #9b59b6; color: #9b59b6; }
.mod-almacen { border-color: #e67e22; color: #e67e22; }
.mod-admin { border-color: #c0392b; color: #c0392b; }

/* UTILIDADES */
.hidden { display: none !important; }
.text-center { text-align: center; }
.error-msg { color: var(--primary); font-size: 12px; margin-top: 5px; font-weight: bold; }