/*
    Copyright (c) 2025 Jakub Janecek
    All rights reserved.
    See copyright_rights_plan.txt for details.
*/
html {
    scroll-behavior: smooth;
}

:root {
    --bg: #e0e5ec;
    --text: #333;
}

[data-theme="dark"] {
    --bg: #1c1f26;
    --text: #f0f0f0;
}

body {
    background: var(--bg);
    color: var(--text);
}


h1,
h2,
h3 {
    font-weight: 700;
    margin-bottom: 1rem;
}

.lead {
    font-size: 1.25rem;
    font-weight: 400;
    color: #8b8b8b;
}

/* Neumorphism + Glass */
.neuo-section {
    background: var(--bg);
}

.gallery-container {
    max-width: 1200px;
    margin: 0 auto;
}

.masonry-gallery {
    column-count: 4;
    column-gap: 1.5rem;
}

.masonry-item {
    break-inside: avoid;
    margin-bottom: 1.5rem;
    width: 100%;
    display: block;
}

.masonry-item img {
    width: 100%;
    max-width: 428px;
    height: 220px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(31, 38, 135, 0.10);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.masonry-item img:hover {
    transform: translateY(-8px) scale(1.04);
    box-shadow: 0 12px 32px rgba(31, 38, 135, 0.18);
    z-index: 2;
}

@media (max-width: 1200px) {
    .masonry-gallery {
        column-count: 3;
    }
}

@media (max-width: 768px) {
    .masonry-gallery {
        column-count: 2;
    }

    .masonry-item img {
        height: 180px;
    }
}

@media (max-width: 576px) {
    .masonry-gallery {
        column-count: 1;
    }

    .masonry-item img {
        height: 140px;
    }
}

/* Modal controls */
.flip-card {
    perspective: 1000px;
    height: 200px;
    position: relative;
    overflow: hidden;
    /* prevent faces from showing outside the card */
    border-radius: 20px;
    /* ensure container clips corners cleanly */
    background: var(--bg);
    /* match face background to avoid flashes */
}

/* inner wrapper handles the 3D rotation */
.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(.25, .8, .25, 1);
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
    transform: translateZ(0);
    /* promote to its own rendering layer */
    will-change: transform;
}

/* faces are stacked absolutely so they don't occupy normal flow */
.flip-card-front,
.flip-card-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: inherit;
    /* inherit container radius to avoid mismatches */
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.flip-card-front {
    background: var(--bg);
    box-shadow: inset 4px 4px 8px #b8b9be, inset -4px -4px 8px #fff;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.flip-card-back {
    background: var(--bg);
    transform: rotateY(180deg);
}

/* Flip interaction: flip on hover/focus; support JS toggling via .is-flipped; respect reduced motion */
.flip-card {
    cursor: pointer;
}

.flip-card-inner {
    transform: rotateY(0);
}

.flip-card:hover .flip-card-inner,
.flip-card:focus-within .flip-card-inner,
.flip-card-inner.is-flipped {
    transform: rotateY(180deg);
}

@media (prefers-reduced-motion: reduce) {
    .flip-card-inner {
        transition: none !important;
    }
}

.hero-img {
    border-radius: 24px;
    max-width: 420px;
    width: 100%;
    object-fit: cover;
    margin: 1rem 0;
    display: block;
}

@media (max-width: 991px) {
    .hero-img {
        max-width: 100%;
        margin-top: 2rem;
        height: auto;
        min-height: 180px;
    }
}

@media (max-width: 576px) {
    .hero-img {
        max-width: 100%;
        min-height: 120px;
        height: auto;
        margin-bottom: 1rem;
        display: block;
    }
}

/* Improved dark mode for all screens */


.testimonial {
    font-style: italic;
    font-size: 1.2rem;
    color: #8b8b8b;
}

.btn {
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-sm i.bi {
    font-size: 1.2rem;
    vertical-align: middle;
    margin-right: 2px;
}

/* Navbar anchor hover animation: subtle lift + animated underline (uses currentColor) */
.navbar .nav-link {
    position: relative;
    transition: transform 160ms ease, color 180ms ease;
    will-change: transform;
}

/* Flip toggle button (small circular control) */
.flip-toggle {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 5;
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

/* Subtle shadow animation during flip for depth */
.flip-card .flip-card-front,
.flip-card .flip-card-back {
    transition: box-shadow 0.45s ease, transform 0.6s cubic-bezier(.25, .8, .25, 1);
}

.flip-card:hover .flip-card-front,
.flip-card:focus-within .flip-card-front {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

.flip-card:hover .flip-card-back,
.flip-card:focus-within .flip-card-back,
.flip-card-inner.is-flipped .flip-card-back {
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
}


.navbar .nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    transform-origin: center;
    bottom: -6px;
    height: 2px;
    width: 60%;
    background: currentColor;
    border-radius: 2px;
    transition: transform 220ms cubic-bezier(.2, .8, .2, 1);
    opacity: 0.95;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
    transform: translateY(-3px);
}

.navbar .nav-link:hover::after,
.navbar .nav-link:focus::after {
    transform: translateX(-50%) scaleX(1);
}

/* Center navbar items on tablet/mobile so the animated underline aligns */
@media (max-width: 991px) {
    .navbar .navbar-nav {
        margin-left: 0 !important;
        /* override ms-auto */
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.25rem;
    }

    .navbar .nav-link {
        text-align: center;
        width: 100%;
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }

    .navbar .nav-link::after {
        width: 70%;
        left: 50%;
        transform: translateX(-50%) scaleX(0);
    }
}

@media (max-width: 576px) {
    .navbar .nav-link::after {
        width: 80%;
    }
}