/* ============================
   VARIABLES DE COLOR - PALETA KOKORIA
   ============================ */
:root {
    --color-principal: #4D4352;           /* Logo texto principal */
    --color-primario: #A020F0;            /* Botón primario y detalle IA */
    --color-primario-hover: #8919D6;      /* 90% violeta + 10% negro */
    --color-secundario: #00C6AC;          /* Botón secundario */
    --color-acento: #008B78;              /* Enlaces, iconos, gráficos */
    --color-fondo-suave: #B3A7B8;         /* Fondos suaves */
    --color-blanco: #FFFFFF;
    --color-texto: #352F37;               /* Tipografía gris muy oscuro */

    /* Variaciones para transiciones */
    --color-primario-light: #C060FF;
    --color-secundario-dark: #00A394;
}


/* ============================
   ESTILOS GENERALES
   ============================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--color-blanco) 0%, #F5F9F7 100%);
    color: var(--color-texto);
    line-height: 1.6;
}

/* ============================
   SECCIÓN HERO (LANDING)
   ============================ */
.hero {
    background: linear-gradient(135deg, var(--color-fondo-suave) 0%, #E8E4EA 100%);
    color: var(--color-principal);
    padding: 5rem 2rem;
    text-align: center;
    border-radius: 0 0 30px 30px;
    box-shadow: 0 4px 20px rgba(77, 67, 82, 0.2);
}

.hero h1 {
    color: var(--color-principal);
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.feature-icon {
    font-size: 3rem;
    color: var(--color-primario);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--color-primario);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
    box-shadow: 0 4px 15px rgba(160, 32, 240, 0.3);
}

/* ============================
   BOTONES
   ============================ */

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: var(--color-primario);
    color: var(--color-blanco);
    box-shadow: 0 4px 15px rgba(160, 32, 240, 0.3);
}

.btn-primary:hover {
    background: var(--color-primario-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(160, 32, 240, 0.4);
}

.btn-secondary {
    background: var(--color-secundario);
    color: var(--color-blanco);
    box-shadow: 0 4px 15px rgba(0, 198, 172, 0.3);
}

.btn-secondary:hover {
    background: var(--color-secundario-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 198, 172, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-primario);
    border: 2px solid var(--color-primario);
}

.btn-outline:hover {
    background: var(--color-primario);
    color: var(--color-blanco);
}

/* ============================
   NAVEGACIÓN
   ============================ */
nav {
    background: var(--color-blanco);
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(53, 47, 55, 0.1);
    border-bottom: 2px solid var(--color-secundario);
}

nav a {
    color: var(--color-texto);
    text-decoration: none;
    margin: 0 15px;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--color-acento);
}

/* Override Bootstrap navbar colors */
.navbar-brand {
    color: var(--color-principal) !important;
    font-weight: bold;
}

.navbar-light .navbar-nav .nav-link {
    color: var(--color-texto) !important;
}

.navbar-light .navbar-nav .nav-link:hover {
    color: var(--color-acento) !important;
}

/* ============================
   TARJETAS
   ============================ */
.card {
    background: var(--color-blanco);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(53, 47, 55, 0.1);
    margin-bottom: 2rem;
    border-top: 4px solid var(--color-primario);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(53, 47, 55, 0.15);
}

.card-header {
    border-bottom: 2px solid var(--color-fondo-suave);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.card-title {
    color: var(--color-principal);
    font-size: 1.5rem;
    font-weight: 700;
}

/* ============================
   FORMULARIOS
   ============================ */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-principal);
    font-weight: 600;
    font-size: 14px;
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #E0E5E3;
    border-radius: 8px;
    font-size: 16px;
    color: var(--color-principal);
    background: var(--color-blanco);
    transition: all 0.3s ease;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primario);
    box-shadow: 0 0 0 3px rgba(160, 32, 240, 0.1);
}

/* ============================
   ALERTAS Y MENSAJES
   ============================ */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.alert-success {
    background: #E0F7F2;
    color: var(--color-acento);
    border-left: 4px solid var(--color-secundario);
}

.alert-error {
    background: #FFE8F0;
    color: #D01080;
    border-left: 4px solid var(--color-primario);
}

.alert-info {
    background: #E8E4EA;
    color: var(--color-texto);
    border-left: 4px solid var(--color-principal);
}

/* ============================
   BADGES Y ESTADOS
   ============================ */
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-active {
    background: #E0F7F2;
    color: var(--color-acento);
}

.badge-pending {
    background: #F0E8FF;
    color: var(--color-primario);
}

.badge-completed {
    background: var(--color-principal);
    color: var(--color-blanco);
}

/* ============================
   ENLACES
   ============================ */
a {
    color: var(--color-acento);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-primario);
    text-decoration: underline;
}

/* ============================
   TÍTULOS
   ============================ */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-principal);
    font-weight: 700;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

/* ============================
   ICONOS
   ============================ */
.icon {
    color: var(--color-acento);
    transition: color 0.3s ease;
}

.icon-primary {
    color: var(--color-primario);
}

.icon-secondary {
    color: var(--color-secundario);
}

/* ============================
   LOADING SPINNER
   ============================ */
.spinner {
    border: 3px solid var(--color-fondo-suave);
    border-top: 3px solid var(--color-primario);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ============================
   FOOTER
   ============================ */
footer {
    background: var(--color-principal);
    color: var(--color-blanco);
    padding: 2rem;
    text-align: center;
    margin-top: 3rem;
}

footer a {
    color: var(--color-secundario);
}

footer a:hover {
    color: var(--color-blanco);
}

/* ============================
   LOGOS Y BRANDING
   ============================ */
.navbar-brand img {
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.hero img {
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.15));
    max-width: 100%;
    height: auto;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Responsive para el logo del hero */
@media (max-width: 768px) {
    .hero img {
        height: 80px !important;
        max-width: 300px;
    }
}