/* =====================================================
   THEME
===================================================== */

:root {
    --trophy-blue: #0b5cc6;
    --trophy-cyan: #00c7c7;
    --trophy-ink: #0f223a;
    --trophy-muted: #6c7a90;
    --trophy-bg: #f4f8ff;

    --font-heading: "Ubuntu", "Inter", "Segoe UI", system-ui, sans-serif;
    --font-body: "Roboto", "Inter", "Segoe UI", system-ui, sans-serif;
}

/* =====================================================
   BASE
===================================================== */

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--trophy-ink);
    margin: 0;
}

header {
    backdrop-filter: saturate(180%) blur(6px);
    background: rgba(255,255,255,.9);
}


/* =====================================================
   TYPOGRAPHY
===================================================== */

h1, h2, h3, h4 {
    font-family: var(--font-heading), serif;
    font-weight: 600; /* zjemněno kvůli Ubuntu */
    letter-spacing: -0.015em;
    margin: 1.5em 0 .75em;
}

h1 {
    font-size: clamp(2.4rem, 4vw, 3.2rem);
    color: var(--trophy-blue);
}

h2 {
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    color: var(--trophy-blue);
}

h3 {
    font-size: 1.6rem;
    color: var(--trophy-blue);
}

h4 {
    font-size: .9rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--trophy-blue);
}

p {
    margin-bottom: 1rem;
}
b, strong {
    font-weight: bolder;
    color: #0c5cc6;
}

.margin-0 {
    margin: 0 !important;
}
.margin-heading {
    margin: 1rem !important;
}

.text-white {
    color: #fff;
}
.text-muted {
    color: var(--trophy-muted) !important;
}

/* =====================================================
   BURGER TOGGLE
===================================================== */

.navbar-toggler {
    border: none;
    padding: .25rem;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.burger {
    width: 32px;
    height: 22px;
    position: relative;
    display: inline-flex;
    flex-direction: column;
    justify-content: space-between;
}

.burger span {
    height: 3px;
    width: 100%;
    background: var(--trophy-blue);
    border-radius: 2px;
    transition: transform .35s ease, opacity .25s ease;
}

/* ANIMACE → KŘÍŽEK */
.burger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.burger[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.burger[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* =====================================================
   NAV COLLAPSE ANIMATION
===================================================== */

@media (max-width: 991px) {
    .navbar-collapse {
        background: #fff;
        border-radius: 16px;
        padding: 1rem 1.25rem;
        margin-top: .75rem;
        box-shadow: 0 20px 40px rgba(0,0,0,.08);
        transform-origin: top;
        animation: navFade .35s ease forwards;
    }

    @keyframes navFade {
        from {
            opacity: 0;
            transform: translateY(-8px) scale(.98);
        }
        to {
            opacity: 1;
            transform: translateY(0) scale(1);
        }
    }
}



/* =====================================================
   HEADING UNDERLINE
===================================================== */

.heading-underline {
    position: relative;
    display: inline-block;
    padding-bottom: .35rem;
}

.heading-underline::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background: var(--trophy-blue);
    transition: width .3s ease;
}

/* volitelný hover efekt */
.heading-underline:hover::after {
    width: 60px;
}


/* =====================================================
   NAVBAR
===================================================== */

.navbar {
    background: transparent;
    border-bottom: 1px solid rgba(0,0,0,.05);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--trophy-blue);
}

.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--trophy-blue);
    padding: .5rem 0;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--trophy-blue);
    transition: width .25s ease;
}

.nav-link:hover {
    color: var(--trophy-blue);
}

.nav-link:hover::after {
    width: 100%;
}
@media (max-width: 991px) {
    .navbar-nav {
        gap: .75rem;
    }

    .nav-link {
        font-size: 1.1rem;
    }
}

/* =====================================================
   SECTIONS
===================================================== */

section {
    padding: 4rem 0;
    scroll-margin-top: 100px;
}

.hero {
    background: linear-gradient(180deg, var(--trophy-bg), #fff);
}

.section-dark {
    background: var(--trophy-blue);
    color: #fff;
}

.section-dark h2,
.section-dark p {
    color: #fff;
}

/* =====================================================
   BUTTONS
===================================================== */

.btn {
    border-radius: 999px;
    font-weight: 700;
    padding: .7rem 1.4rem;
}

.btn-primary {
    background: var(--trophy-blue);
    border: none;
}

.btn-primary:hover {
    background: #094aa0;
}

.btn-cyan {
    background: var(--trophy-cyan);
    color: #fff;
    border: none;
}

.btn-cyan:hover {
    background: #02b0b0;
    color: #fff;
}

.button-bordered {
    background: #fff;
    color: var(--trophy-blue);
    border: 2px solid;
}
/* =====================================================
   BUTTON ARROW
===================================================== */

.btn-arrow {
    position: relative;
    padding-right: 2.4rem; /* místo pro šipku */
}

.btn-arrow::after {
    content: "→";
    position: absolute;
    right: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    transition: transform .25s ease;
}

.btn-arrow:hover::after {
    transform: translate(4px, -50%);
}

/* =====================================================
   CARDS / MEDIA
===================================================== */

.hero-img {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(0,0,0,.12);
}

.winner-card h3 {
    color: var(--trophy-blue);
}
.winner-card img {
    border-radius: 12px;
}

/* =====================================================
   FOOTER
===================================================== */

footer {
    background: #f3f6fa;
    padding: 3rem 0 1.5rem;
}

.footer-bottom {
    border-top: 1px solid rgba(0,0,0,.1);
    margin-top: 2rem;
    padding-top: 1rem;
    font-size: .9rem;
    color: var(--trophy-muted);
    text-align: center;
}

/* =====================================================
   VOTING PROJECTS
===================================================== */

.project-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 30px rgba(0,0,0,.08);
    transition: transform .3s ease, box-shadow .3s ease;
    height: 100%;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,.12);
}

.project-card img {
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.project-body {
    padding: 1.25rem;
    text-align: center;
}

.project-body h3 {
    margin-bottom: .5rem;
}

.project-body p {
    color: var(--trophy-muted);
    font-size: .95rem;
}

/* =====================================================
   RULES
===================================================== */

.rules-wrap {
    margin-top: 1.5rem;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 12px 30px rgba(0,0,0,.08);
    padding: 1.5rem;
}

.rules-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: .75rem;
}

.rules-list li {
    display: flex;
    gap: .75rem;
    align-items: flex-start;
    padding: .9rem 1rem;
    border-radius: 12px;
    background: rgba(11,92,198,.05);
}

.rules-badge {
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    border-radius: 999px;
    background: var(--trophy-blue);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: .9rem;
    line-height: 1;
}

.rules-actions {
    margin-top: 1.25rem;
    display: flex;
    gap: .75rem;
    flex-wrap: wrap;
}

.modal-header {
  background-color: #0b5cc6;
}