:root {
    /* Brand colors */
    --primary-color: #2fafed;
    --primary-color-dark: #1d3fae;
    --primary-color-light: #7de1ff;
    --accent-color: #17c3b2;
    --secondary-color: #1f2340;

    /* Text colors */
    --text-blue-sky: var(--primary-color-light);
    --text-color-night: #1c1e2b;
    --text-color-invert: #ffffff;

    /* Surface colors */
    --background-color: #ffffff;
    --surface-color: #ffffff;
    --surface-color-alt: #f4f6fb;
    --header-background-color: var(--secondary-color);
    --header-background-color-scrolled: rgba(31, 35, 64, 0.55);
    --footer-background-color: var(--secondary-color);

    /* Effects */
    --shadow-color: #00000033;
    --shadow-sm: 0 2px 8px var(--shadow-color);
    --shadow-md: 0 4px 20px var(--shadow-color);
    --shadow-lg: 0 10px 40px var(--shadow-color);
    --radius-md: 16px;
    --radius-pill: 50px;

    /* Motion */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease;

    /* Layout */
    --header-height: 70px;
    --content-max-width: 1200px;
    --scroll-offset-top: calc(var(--header-height) + 20px);

    /* Background grid */
    --grid-dot-color: var(--primary-color);
    --grid-dot-opacity: 0.18;
    --grid-dot-size: 1.5px;
    --grid-gap: 28px;
    --grid-glow-radius: 160px;
    --mouse-x: 50%;
    --mouse-y: 50%;

    /* Scrollbar (desktop only) */
    --scrollbar-size: 12px;
    --scrollbar-track: var(--surface-color-alt);
    --scrollbar-thumb: var(--primary-color-light);
    --scrollbar-thumb-hover: var(--primary-color);
}

/* DARK THEME — applies when the system prefers dark (unless overridden) or when explicitly toggled */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --background-color: #12141f;
        --surface-color: #1b1e2e;
        --surface-color-alt: #232640;
        --text-color-night: #e8eaf5;
        --shadow-color: #00000066;
    }
}

:root[data-theme="dark"] {
    --background-color: #12141f;
    --surface-color: #1b1e2e;
    --surface-color-alt: #232640;
    --text-color-night: #e8eaf5;
    --shadow-color: #00000066;
}

* { box-sizing: border-box; }

a { text-decoration: none; }
ul { list-style: none; padding: 0; }

.text-blue-sky { color: var(--text-blue-sky); }

html { scroll-behavior: smooth; scrollbar-gutter: stable; }

body {
    position: relative;
    font-family: "Montserrat", sans-serif;
    margin: 0;
    color: var(--text-color-night);
    background-color: var(--background-color);
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

#logotipo {
  width: fit-content;
  height: 4.5em;
  filter: drop-shadow(0px 0px 30px skyblue) drop-shadow(0px 0px 10px black);
}

/* SCROLLBAR (desktop/PC browsers only — touch devices use their own overlay scrollbars) */
@media (hover: hover) and (pointer: fine) {
    html {
        scrollbar-width: thin;
        scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
    }

    ::-webkit-scrollbar {
        width: var(--scrollbar-size);
        height: var(--scrollbar-size);
    }

    ::-webkit-scrollbar-track {
        background-color: var(--scrollbar-track);
    }

    ::-webkit-scrollbar-thumb {
        background-color: var(--scrollbar-thumb);
        border-radius: var(--radius-pill);
        border: 3px solid var(--scrollbar-track);
        transition: background-color var(--transition-fast);
    }

    ::-webkit-scrollbar-thumb:hover {
        background-color: var(--scrollbar-thumb-hover);
    }
}

.background-grid {
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;

    &::before,
    &::after {
        content: "";
        position: absolute;
        inset: 0;
        background-image: radial-gradient(circle, currentColor var(--grid-dot-size), transparent var(--grid-dot-size));
        background-size: var(--grid-gap) var(--grid-gap);
        color: var(--grid-dot-color);
    }

    &::before {
        opacity: var(--grid-dot-opacity);
    }

    &::after {
        opacity: 0;
    }
}

@media (hover: hover) and (pointer: fine) {
    .background-grid::after {
        opacity: 1;
        -webkit-mask-image: radial-gradient(circle var(--grid-glow-radius) at var(--mouse-x) var(--mouse-y), black 0%, transparent 100%);
        mask-image: radial-gradient(circle var(--grid-glow-radius) at var(--mouse-x) var(--mouse-y), black 0%, transparent 100%);
    }
}

header {
    z-index: 1000;
    position: fixed;
    width: 100%;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    background-color: var(--header-background-color);
    backdrop-filter: blur(0px);
    text-shadow: 0 0 20px #0000004d;

    transition: backdrop-filter var(--transition-base), background-color var(--transition-base);
    animation: cambiarHeader linear both;
    animation-timeline: scroll(root);
    animation-range: 0px 500px;

    #icon-header {
        display: flex;
        justify-content: center;
        align-items: center;

        img {
            width: 100px;
            height: fit-content;
            margin-left: 10px;
        }

        h1 {
            margin: 15px 20px;
            color: var(--text-color-invert);
            user-select: none;
            font-size: clamp(1.25rem, 4vw, 1.75rem);
        }
    }

    nav > ul {
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 10px;
        margin: 0 20px 0 0;

        li {
            display: flex;
        }

        a {
            display: block;
            width: max-content;
            padding: 12px 20px;
            text-align: center;
            white-space: nowrap;
            font-size: 1.1rem;
            color: var(--text-color-invert);
            border-radius: var(--radius-pill);
            transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);

            &:hover {
                background-color: var(--text-color-invert);
                color: var(--primary-color);
                box-shadow: var(--shadow-sm);
                transform: translateY(-2px);
            }

            &:active { transform: translateY(0); }
        }

        .theme-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            padding: 0;
            border: none;
            border-radius: 50%;
            background-color: transparent;
            color: var(--text-color-invert);
            cursor: pointer;
            transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);

            &::before {
                content: "";
                display: block;
                width: 20px;
                height: 20px;
                background-color: currentColor;
                mask-repeat: no-repeat;
                mask-position: center;
                mask-size: contain;
                -webkit-mask-repeat: no-repeat;
                -webkit-mask-position: center;
                -webkit-mask-size: contain;
            }

            &[data-icon="light"]::before {
                mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='4'/%3E%3Cpath d='M12 2v2M12 20v2M4.93 4.93l1.41 1.41M17.66 17.66l1.41 1.41M2 12h2M20 12h2M6.34 17.66l-1.41 1.41M19.07 4.93l-1.41 1.41'/%3E%3C/svg%3E");
                -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='4'/%3E%3Cpath d='M12 2v2M12 20v2M4.93 4.93l1.41 1.41M17.66 17.66l1.41 1.41M2 12h2M20 12h2M6.34 17.66l-1.41 1.41M19.07 4.93l-1.41 1.41'/%3E%3C/svg%3E");
            }

            &[data-icon="dark"]::before {
                mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z'/%3E%3C/svg%3E");
                -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z'/%3E%3C/svg%3E");
            }

            &[data-icon="auto"]::before {
                mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2' y='3' width='20' height='14' rx='2'/%3E%3Cpath d='M8 21h8M12 17v4'/%3E%3C/svg%3E");
                -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2' y='3' width='20' height='14' rx='2'/%3E%3Cpath d='M8 21h8M12 17v4'/%3E%3C/svg%3E");
            }

            &:hover {
                background-color: var(--text-color-invert);
                color: var(--primary-color);
                transform: translateY(-2px);
            }
        }

        .lang-select {
            appearance: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            padding: 8px 36px 8px 16px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-pill);
            background-color: transparent;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 16px;
            color: var(--text-color-invert);
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color var(--transition-fast), color var(--transition-fast);

            &:hover {
                background-color: var(--text-color-invert);
                color: var(--primary-color);
                background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232f6fed' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            }

            option {
                color: var(--text-color-night);
                background-color: var(--surface-color);
            }
        }
    }

    .nav-toggle,
    .nav-toggle-label {
        display: none;
    }
}

main {
    display: flex;
    flex-direction: column;
    font-size: 1.5rem;

    #about-us {
        text-align: center;
        margin: 30px auto;
        max-width: var(--content-max-width);
        padding: 0 20px;
        scroll-margin-top: var(--scroll-offset-top);

        h1 { color: var(--primary-color); }
        p { line-height: 1.6; margin: 0 auto 20px; max-width: 800px; }
    }

    #about {
        position: relative;
        height: 100vh;
        overflow: hidden;

        &::before {
            content: "";
            position: absolute;
            inset: -40% 0;
            background-image: url('/assets/fondo.webp');
            filter: blur(5px) brightness(0.75);
            background-size: cover;
            background-position: center;
            z-index: -1;
            animation: heroParallax linear both;
            animation-timeline: scroll(root);
            animation-range: 0px 900px;
        }

        > section {
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            height: 100%;
            color: var(--text-color-invert);
            text-shadow: 0 0 20px #000000bb;
            font-size: clamp(1.75rem, 5vw, 3rem);
            padding: 0 20px;
            text-align: center;

            h6 { text-align: center; margin: 75px 0 15px 0; }
            p { max-width: 700px; margin: 0 auto; text-align: center; font-size: 0.55em; }
        }
    }

    #products {
        scroll-margin-top: var(--scroll-offset-top);
    }

    #products > section,
    #contact {
        p { margin: 0 10%; }
    }

    #products > section {
        text-align: center;
        margin: 30px auto;
        max-width: var(--content-max-width);
        padding: 0 20px;
    }

    #products-list {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 30px;
        margin: 0 auto 50px;
        padding: 0 20px;

        .product {
            width: 75%;
            min-height: 35vh;
            display: flex;
            flex-direction: column;
            background-color: var(--surface-color);
            border-radius: var(--radius-md);
            border-top: 4px solid transparent;
            padding: 25px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
            cursor: pointer;
            scroll-margin-top: var(--scroll-offset-top);
            overflow: hidden;

            &:focus-visible {
                outline: 3px solid var(--accent-color);
                outline-offset: 4px;
            }

            .product-banner {
                width: calc(100% + 50px);
                height: calc(100% + 200px);
                aspect-ratio: 16 / 5;
                margin: -25px -25px 20px;
                display: flex;
                align-items: center;
                justify-content: center;
                padding: 20px;
                background-position: center;
                background-size: cover;
            }

            #panicbutton {
                background: url("assets/logos/panic-button.png");
                background-position: center;
                background-size: cover;
            }
            #migratos {
                background: url("assets/logos/migratos.png");
                background-position: center;
                background-size: cover;
            }
            #xafetypro {
                background: url("assets/logos/xafety-pro.png");
                background-position: center;
                background-size: cover;
            }

            .product-body {
                flex: 1;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                align-items: center;
                gap: 15px;
            }

            h2 {
                color: var(--primary-color);
                margin: 0;
                text-align: center;
            }

            p {
                padding: 25px;
                margin: 0;
            }

            &:hover {
                box-shadow: var(--shadow-lg);
                transform: translateY(-5px);
            }
        }
    }

    #contact {
        text-align: center;
        margin: 30px auto;
        max-width: var(--content-max-width);
        padding: 0 20px;
        scroll-margin-top: var(--scroll-offset-top);

        a {
            color: var(--primary-color);
            transition: color var(--transition-fast);

            &:hover { color: var(--primary-color-light); }
        }
    }
}

footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    align-items: center;
    gap: 30px;
    margin-top: 60px;
    background-color: var(--footer-background-color);
    padding: 40px 20px;
    color: var(--text-color-invert);

    div {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: stretch;
        height: max-content;

        a {
            text-align: center;
            color: var(--text-color-invert);
            transition: color var(--transition-fast);

            &:hover { color: var(--primary-color-light); }
        }

        ul {
            text-align: center;

            li a { transition: color var(--transition-fast); }
        }
    }
}

/* ANIMACION DEL HEADER */
@keyframes cambiarHeader {
    to {
        background-color: var(--header-background-color-scrolled);
        backdrop-filter: blur(10px);
        box-shadow: var(--shadow-md);
    }
}

/* HERO PARALLAX (background scrolls slower than the page) */
@keyframes heroParallax {
    to {
        transform: translateY(30%);
    }
}

/* FADE SPAWN ON SCROLL (triggered once, not synced to scroll position) */
main section {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

main section.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* ANIMATED PARAGRAPH SPAWN (word-by-word reveal, like a streaming chat response) */
.reveal-word {
    display: inline-block;
    opacity: 0;
    animation: wordReveal 0.45s ease forwards;
    animation-delay: calc(var(--i, 0) * 45ms);
}

@keyframes wordReveal {
    to {
        opacity: 1;
    }
}

/* BACK TO TOP */
.back-to-top {
    position: fixed;
    right: 25px;
    bottom: 25px;
    z-index: 900;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--text-color-invert);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), background-color var(--transition-fast);

    svg {
        width: 22px;
        height: 22px;
    }

    &.visible {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    &:hover {
        background-color: var(--primary-color-dark);
    }
}

/* PRODUCT MODAL */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);

    .modal-overlay {
        position: absolute;
        inset: 0;
        background-color: rgba(0, 0, 0, 0.6);
    }

    .modal-content {
        position: relative;
        z-index: 1;
        width: 100%;
        max-width: 600px;
        max-height: 85vh;
        overflow-y: auto;
        background-color: var(--surface-color);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(30px) scale(0.95);
        transition: transform var(--transition-base);
    }

    .modal-media {
        position: relative;
        width: 100%;
        aspect-ratio: 16 / 9;
        overflow: hidden;
        background: linear-gradient(135deg, var(--secondary-color), var(--primary-color-dark));
        box-shadow: var(--shadow-sm);

        video {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0;
            transition: opacity var(--transition-slow);
        }

        &::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 50px;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.35), transparent);
            pointer-events: none;
        }

        &.has-video .modal-video-placeholder {
            opacity: 0;
            pointer-events: none;
        }

        &.video-ready .modal-video {
            opacity: 1;
        }
    }

    .modal-video-placeholder {
        position: absolute;
        inset: 0;
        z-index: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 14px;
        padding: 0 20px;
        color: var(--text-color-invert);
        font-size: 1.05rem;
        text-align: center;
        transition: opacity var(--transition-base);

        &::before {
            content: "\25B6";
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            padding-left: 4px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            font-size: 1rem;
        }
    }

    .modal-body {
        padding: 30px 40px 40px;

        h2 { color: var(--primary-color); margin: 0 0 5px; text-align: center; }
    }

    .modal-tagline {
        color: var(--accent-color);
        font-weight: bold;
        font-size: 1.1rem;
        margin: 0 0 20px;
        text-align: center;
    }

    .modal-description {
        font-size: 1.15rem;
        line-height: 1.6;
        margin: 0;
    }

    .modal-features {
        margin: 25px 0 0;

        li {
            position: relative;
            padding: 10px 0 10px 28px;
            font-size: 1.1rem;
            border-bottom: 1px solid var(--surface-color-alt);

            &::before {
                content: "\2713";
                position: absolute;
                left: 0;
                color: var(--accent-color);
                font-weight: bold;
            }
        }
    }

    .modal-close {
        position: absolute;
        z-index: 2;
        top: 15px;
        right: 15px;
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        border: none;
        border-radius: 50%;
        background-color: rgba(255, 255, 255, 0.85);
        color: var(--text-color-night);
        cursor: pointer;
        box-shadow: var(--shadow-sm);
        transition: color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);

        svg {
            width: 18px;
            height: 18px;
        }

        &:hover {
            color: var(--text-color-invert);
            background-color: var(--primary-color);
            transform: rotate(90deg);
        }
    }

    .modal-website-link {
        display: flex;
        width: 100%;
        align-items: center;
        justify-content: center;
        gap: 8px;
        margin-top: 25px;
        padding: 14px 28px;
        background-color: var(--primary-color);
        color: var(--text-color-invert);
        font-weight: bold;
        border-radius: var(--radius-pill);
        transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);

        &:hover {
            background-color: var(--primary-color-dark);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
    }
}

.modal.open {
    opacity: 1;
    visibility: visible;

    .modal-content {
        transform: translateY(0) scale(1);
    }
}

/* RESPONSIVE NAV (mobile) */
@media (max-width: 768px) {
    header {
        
        #icon-header {
          h1 { display: none; }
          img {
            width: 100px;
            padding: 10px 0px;
          }
        }

        flex-wrap: wrap;

        .nav-toggle-label {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            width: 28px;
            height: 20px;
            margin: 0 20px;
            cursor: pointer;

            span,
            &::before,
            &::after {
                content: "";
                display: block;
                height: 3px;
                width: 100%;
                background-color: var(--text-color-invert);
                border-radius: 2px;
                transition: transform var(--transition-fast), opacity var(--transition-fast);
            }
        }

        nav {
            flex-basis: 100%;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);

            > ul {
                flex-direction: column;
                margin: 0;
                padding: 10px 0;

                li {
                    width: 100%;
                    justify-content: center;
                    padding: 4px 0;

                    a {
                        width: 100%;
                        border-radius: 0;
                    }
                }
            }
        }

        .nav-toggle:checked ~ nav {
            max-height: 420px;
        }

        .nav-toggle:checked ~ .nav-toggle-label {
            span { opacity: 0; }

            &::before { transform: translateY(8.5px) rotate(45deg); }
            &::after { transform: translateY(-8.5px) rotate(-45deg); }
        }
    }

    main {
        #about > section p { font-size: 0.6em; }

        #products-list .product {
            width: 90%;
            min-height: auto;
            text-align: center;

            .product-body { grid-template-columns: 1fr; }
            p { padding: 10px 0; }
        }
    }

    footer {
        flex-direction: column;
        text-align: center;
        font-size: 1.25rem;
    }

    .modal .modal-body {
        padding: 20px;
    }
}