@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

/* Global design variables */
:root {
    --color-background: #0b1110;
    --color-background-light: #111a17;
    --color-card: #16211d;
    --color-card-hover: #1c2b25;
    --color-pitch: #17633c;
    --color-pitch-dark: #125331;
    --color-pitch-line: rgba(255, 255, 255, 0.7);
    --color-primary: #48d597;
    --color-primary-dark: #2fb77b;
    --color-text: #f3f7f5;
    --color-text-muted: #9baaa3;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-danger: #e87575;
    --color-warning: #e5c56a;

    --max-width: 1200px;
    --radius-small: 8px;
    --radius-medium: 14px;
    --radius-large: 20px;
}

/* Reset & Global styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}



html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
}

h1,
h2,
h3 {
    font-family: 'Space Grotesk', sans-serif;
}

button,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Reusable layout */
.container {
    width: min(100% - 2rem, var(--max-width));
    margin-inline: auto;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(11, 17, 16, 0.95);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.header-content {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    color: var(--color-primary);
}

.main-nav {
    display: flex;
    gap: 1.5rem;
}

.main-nav a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.main-nav a:hover,
.main-nav a:focus {
    color: var(--color-text);
}

/* Hero */
.hero {
    padding: 8rem 0 7rem;
    background: radial-gradient(circle at 80% 30%,
            rgba(72, 213, 151, 0.12),
            transparent 35%),
        linear-gradient(180deg,
            #0b1110 0%,
            #0e1714 100%);
}

.hero-content {
    max-width: 800px;
}

.eyebrow {
    margin-bottom: 0.75rem;
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.hero h1 {
    max-width: 750px;
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    line-height: 0.98;
    letter-spacing: -0.045em;
}

.hero-description {
    max-width: 600px;
    margin: 1.75rem 0 2.25rem;
    color: var(--color-text-muted);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* Buttons */
.button {
    border: none;
    border-radius: 999px;
    padding: 0.85rem 1.5rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    transition: background-color 0.2s ease,
        transform 0.2s ease;
}

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

.button:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 3px;
}

.button-primary {
    background-color: var(--color-primary);
    color: #07120e;
}

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

/* Sections */
.formations-section,
.formation-detail-section,
.concepts-section {
    padding: 5rem 0;
}

.formation-detail-section {
    background-color: var(--color-background-light);
}

.section-heading {
    max-width: 650px;
    margin-bottom: 2.5rem;
}

.section-heading h2 {
    margin-bottom: 0.75rem;
    font-size: clamp(2rem, 5vw, 3rem);
    line-height: 1;
    letter-spacing: -0.03em;
}

.section-heading p:last-child {
    color: var(--color-text-muted);
}

/* Filter / sort controls */
.controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2.5rem;
    padding: 1.4rem;
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.filter-group label {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.filter-group select {
    width: 100%;
    padding: 0.8rem 0.9rem;
    background-color: var(--color-background-light);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    cursor: pointer;
    transition: border-color 0.2s ease,
        background-color 0.2s ease;
}

.filter-group select:hover {
    border-color: rgba(72, 213, 151, 0.35);
}

.filter-group select:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Formation cards */
.formation-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.formation-card {
    padding: 1.6rem;
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    transition:
        transform 0.2s ease,
        border-color 0.2s ease,
        background-color 0.2s ease;

    cursor: pointer;
}

.formation-card:hover {
    transform: translateY(-3px);
    background-color: var(--color-card-hover);
    border-color: rgba(72, 213, 151, 0.4);
}

.formation-card:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

.formation-card.selected {
    border-color: var(--color-primary);
    background-color: #1a2b24;
    box-shadow: 0 0 0 1px var(--color-primary),
        0 8px 25px rgba(0, 0, 0, 0.18);
}

.formation-card h3 {
    margin-bottom: 0.3rem;
    font-size: 1.65rem;
    letter-spacing: -0.02em;
}

.formation-card .formation-style {
    margin-bottom: 1.25rem;
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.formation-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.65;
}

.card-ratings {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border);
}

.card-rating {
    display: grid;
    grid-template-columns: 90px 1fr;
    align-items: center;
    gap: 0.75rem;
}

.card-rating>span {
    color: var(--color-text-muted);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.card-rating-dots {
    display: flex;
    gap: 0.35rem;
}

.card-rating-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background-color: #34443d;
    transition: background-color 0.2s ease,
        transform 0.2s ease;
}

.card-rating-dot.active {
    background-color: var(--color-primary);
}

.formation-card:hover .card-rating-dot.active {
    transform: scale(1.15);
}

/* Miniature formation pitch */
.mini-pitch {
    position: relative;
    width: 100%;
    max-width: 190px;
    aspect-ratio: 68 / 105;
    margin: 1.5rem auto;
    overflow: hidden;
    background-color: #145534;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 4px;
    opacity: 0.9;
}

/* Creates the alternating grass stripes */
.mini-pitch::before {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(to right, rgba(255, 255, 255, 0.02) 0,
            rgba(255, 255, 255, 0.02) 10%,
            transparent 10%,
            transparent 20%);
}

/* Halfway line */
.mini-pitch-halfway {
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.5);
}

/* Centre circle */
.mini-pitch-centre-circle {
    position: absolute;
    width: 22%;
    aspect-ratio: 1;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
}

/* Penalty areas */
.mini-pitch-penalty {
    position: absolute;
    left: 20%;
    width: 60%;
    height: 16%;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.mini-pitch-penalty.top {
    top: 0;
}

.mini-pitch-penalty.bottom {
    bottom: 0;
}

.mini-pitch-goal {
    position: absolute;
    left: 36%;
    width: 28%;
    height: 6%;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.mini-pitch-goal.top {
    top: 0;
}

.mini-pitch-goal.bottom {
    bottom: 0;
}

/* Players */
.mini-player {
    position: absolute;
    z-index: 2;
    width: 11px;
    height: 11px;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(255, 255, 255, 0.85);
    border-radius: 50%;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.45);
    transition: transform 0.2s ease,
        background-color 0.2s ease;
}

.mini-player.goalkeeper {
    background-color: #9af2c5;
}

.mini-player.defender {
    background-color: #63dda2;
}

.mini-player.midfielder {
    background-color: var(--color-primary);
}

.mini-player.attacker {
    background-color: #7ae8b4;
}

/* Subtle interaction */
.formation-card:hover .mini-player {
    transform: translate(-50%, -50%) scale(1.12);
}

.rating-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1.75rem;
    border-bottom: 1px solid var(--color-border);
}

.rating {
    display: grid;
    grid-template-columns: 100px 1fr;
    align-items: center;
    gap: 1rem;
}

.rating>span {
    color: var(--color-text-muted);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.rating-value {
    display: flex;
    gap: 0.3rem;
}

.rating-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background-color: #34443d;
}

.rating-dot.active {
    background-color: var(--color-primary);
    box-shadow: 0 0 0 1px rgba(72, 213, 151, 0.08);
}

/* Formation detail */
.formation-detail {
    display: grid;
    grid-template-columns: minmax(300px, 1fr) minmax(300px, 0.8fr);
    gap: 3rem;
    align-items: start;
}

/* Football pitch */
.pitch-container {
    width: 100%;
    max-width: 650px;
    margin-inline: auto;
}

.football-pitch {
    position: relative;
    width: 100%;
    max-width: 650px;
    aspect-ratio: 68 / 105;
    overflow: hidden;
    background-color: var(--color-pitch);
    border: 4px solid rgba(255, 255, 255, 0.85);
    border-radius: 6px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.38),
        0 0 0 1px rgba(72, 213, 151, 0.08);
}

/* Creates the alternating grass stripes using a pseudo-element */
.football-pitch::before {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(to right,
            rgba(255, 255, 255, 0.02) 0,
            rgba(255, 255, 255, 0.02) 10%,
            transparent 10%,
            transparent 20%);
}

/* Creates the halfway line using a psuedo-element */
.football-pitch::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 2px;
    background-color: var(--color-pitch-line);
}

/* Centre circle */
.pitch-centre-circle {
    position: absolute;
    width: 22%;
    aspect-ratio: 1;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    border: 1.5px solid var(--color-pitch-line);
    border-radius: 50%;
}

.pitch-centre-circle::after {
    content: "";
    position: absolute;
    width: 5%;
    aspect-ratio: 1;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--color-pitch-line);
    border-radius: 50%;
}

/* Penalty areas */
.penalty-area {
    position: absolute;
    left: 20%;
    width: 60%;
    height: 16%;
    border: 2px solid var(--color-pitch-line);
}

.penalty-area.top {
    top: 0;
    border-top: none;
}

.penalty-area.bottom {
    bottom: 0;
    border-bottom: none;
}

/* Goal areas */
.goal-area {
    position: absolute;
    left: 36%;
    width: 28%;
    height: 6%;
    border: 2px solid var(--color-pitch-line);
}

.goal-area.top {
    top: 0;
    border-top: none;
}

.goal-area.bottom {
    bottom: 0;
    border-bottom: none;
}

/* Player markers are positioned on the pitch using top/left coordinates */
.player-marker {
    position: absolute;
    z-index: 5;
    width: 42px;
    height: 42px;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary);
    color: #07120e;
    border: 2px solid rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    font-size: 0.65rem;
    font-weight: 800;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.35),
        0 0 0 2px rgba(255, 255, 255, 0.12);
    transition: transform 0.2s ease,
        box-shadow 0.2s ease;
}

.player-marker:hover {
    transform: translate(-50%, -50%) scale(1.08);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.4),
        0 0 0 3px rgba(72, 213, 151, 0.2);
}

.player-marker:hover,
.player-marker:focus {
    z-index: 20;
}

.player-marker.goalkeeper {
    background-color: #9af2c5;
}

.player-marker.defender {
    background-color: #63dda2;
}

.player-marker.midfielder {
    background-color: var(--color-primary);
}

.player-marker.attacker {
    background-color: #7ae8b4;
}

/* Player marker content */
.player-label {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Player tooltips */
.player-tooltip {
    position: absolute;
    left: 50%;
    bottom: calc(100% + 10px);
    transform: translateX(-50%) translateY(4px);
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    min-width: max-content;
    padding: 0.5rem 0.7rem;
    background-color: #07120e;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
    font-size: 0.7rem;
    line-height: 1.3;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.15s ease,
        transform 0.15s ease;
}

.player-tooltip span:last-child {
    color: var(--color-text-muted);
}

.player-marker.tooltip-below .player-tooltip {
    top: calc(100% + 10px);
    bottom: auto;
}

.player-marker.tooltip-right .player-tooltip {
    left: 0;
    transform: translateY(4px);
}

.player-marker.tooltip-left .player-tooltip {
    left: auto;
    right: 0;
    transform: translateY(4px);
}

/* Show tooltip on hover */
.player-marker:hover .player-tooltip,
.player-marker:focus .player-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.player-marker.tooltip-right:hover .player-tooltip,
.player-marker.tooltip-right:focus .player-tooltip,
.player-marker.tooltip-left:hover .player-tooltip,
.player-marker.tooltip-left:focus .player-tooltip {
    transform: translateY(0);
}

/* Keyboard focus */
.player-marker:focus {
    outline: 2px solid #ffffff;
    outline-offset: 3px;
}

/* Formation information */
.formation-information {
    padding: 2rem;
    background-color: #141e1a;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.16);
}

.strengths-weaknesses {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);

}

.strengths-weaknesses h3 {
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.strengths-weaknesses ul {
    padding-left: 1.2rem;
}

.strengths-weaknesses li {
    margin-bottom: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.strengths-weaknesses li::marker {
    color: var(--color-primary);
}

/* Tactical concepts */
.concept-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.concept-card {
    padding: 1.5rem;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    transition:
        transform 0.2s ease,
        border-color 0.2s ease,
        background-color 0.2s ease;
}

.concept-card:hover {
    transform: translateY(-3px);
    background-color: var(--color-card-hover);
    border-color: rgba(72, 213, 151, 0.3);
}

.concept-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
}

.concept-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Footer */
.site-footer {
    padding: 3.5rem 0;
    background-color: #070c0a;
    border-top: 1px solid var(--color-border);
}

.site-footer p:first-child {
    margin-bottom: 0.35rem;
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;

}

.site-footer p:last-child {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

/* Responsive design */

/* Tablet and smaller screens */
@media (max-width: 900px) {

    .formation-grid,
    .concept-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .formation-detail {
        grid-template-columns: 1fr;
    }

    .pitch-container {
        max-width: 550px;
    }
}

/* Mobile screens */
@media (max-width: 650px) {
    .header-content {
        flex-direction: column;
        justify-content: center;
        padding: 1rem 0;
    }

    .main-nav {
        gap: 1rem;
    }

    .hero {
        padding: 5rem 0 4rem;
    }

    .hero h1 {
        font-size: clamp(2.4rem, 12vw, 3.8rem);
    }

    .controls {
        grid-template-columns: 1fr;
    }

    .pitch-container {
        max-width: 420px;
    }

    .formation-grid,
    .concept-grid {
        grid-template-columns: 1fr;
    }

    .strengths-weaknesses {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .formation-information {
        padding: 1.25rem;
    }

    .player-marker {
        width: 34px;
        height: 34px;
        font-size: 0.55rem;
    }

    .player-tooltip {
        font-size: 0.65rem;
        padding: 0.4rem 0.55rem;
    }
}