/* Variables de color */
:root {
    --bg-gradient-start: #2b003f;
    --bg-gradient-end: #000000;
    --accent-gradient: linear-gradient(45deg, #d500f9, #00e5ff);
    --btn-gradient: linear-gradient(45deg, #651fff, #6200ea);
    --btn-hover-gradient: linear-gradient(45deg, #7c4dff, #2979ff);
    --card-bg: rgba(255, 255, 255, 0.05);
    --dropdown-bg: rgba(0, 0, 0, 0.6);
    --dropdown-item-hover: rgba(255, 255, 255, 0.1);
    --text-color: #ffffff;
}

/* Reset básico y tipografía */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
}

body {
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

header {
    text-align: center;
    padding: 3rem 1rem;
    background: var(--dropdown-bg);
    backdrop-filter: blur(12px);
}

header h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    background: var(--accent-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header .descripcion {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.5;
    opacity: 0.9;
}

main {
    flex: 1;
    padding: 2rem 1rem;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.funcionalidades ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    list-style: none;
    margin-bottom: 3rem;
}

.funcionalidades li {
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 1rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.7);
    position: relative;
    overflow: hidden;
}

.funcionalidades li span {
    position: relative;
    z-index: 1;
}

.funcionalidades li::before {
    content: "";
    position: absolute;
    top: -30%;
    left: -30%;
    width: 160%;
    height: 160%;
    background: var(--accent-gradient);
    opacity: 0.15;
    transform: rotate(45deg);
}

.acciones {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Botones y Dropdown */
.btn, .dropdown-toggle {
    padding: 0.8rem 2.5rem;
    background: var(--btn-gradient);
    border: none;
    border-radius: 2rem;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.7);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.btn:hover, .dropdown-toggle:hover {
    background: var(--btn-hover-gradient);
    transform: translateY(-4px);
}

.btn::after, .dropdown-toggle::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.btn:active::after, .dropdown-toggle:active::after {
    width: 200%;
    height: 200%;
    transition: 0s;
}

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 50%;
    transform: translateX(-50%);
    background: var(--dropdown-bg);
    backdrop-filter: blur(12px);
    border-radius: 1rem;
    overflow: hidden;
    display: none;
    flex-direction: column;
    min-width: 220px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
    z-index: 10;
}

.dropdown-menu.show {
    display: flex;
}

.dropdown-item {
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    transition: background 0.3s ease;
}

.dropdown-item:hover {
    background: var(--dropdown-item-hover);
}

footer {
    text-align: center;
    padding: 1rem;
    background: var(--dropdown-bg);
    backdrop-filter: blur(12px);
}

footer p {
    font-size: 0.9rem;
    opacity: 0.8;
}