/* ----------------
   RESET & BASE
   ---------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Grayscale Palette */
    --color-text-primary: #2a2a2a;
    --color-text-secondary: #6b6b6b;
    --color-text-tertiary: #9a9a9a;
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f5f5f5;
    --color-bg-tertiary: #e8e8e8;
    --color-border: #d0d0d0;
    --color-border-light: #e8e8e8;

    /* Accent Color (used sparingly) */
    --color-accent: #7c5dfa;
    --color-accent-dark: #6344d9;

    /* Semantic Colors */
    --color-error: #e74c3c;
    --color-disabled: #c8c8c8;

    /* Spacing System */
    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Typography */
    --font-mono: 'Inconsolata', 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', 'Courier New', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;

    /* Transitions */
    --transition-fast: 120ms ease-out;
    --transition-base: 200ms ease-out;
}

/* ----------------
   BACKGROUND TEXTURE
   ---------------- */
body {
    font-family: var(--font-mono);
    background-color: var(--color-bg-secondary);
    background-image:
        radial-gradient(circle, var(--color-border-light) 1px, transparent 1px);
    background-size: 16px 16px;
    height: 100svh;
    padding: var(--spacing-sm);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
}

/* ----------------
   CONTAINER
   ---------------- */
.container {
    min-height: 0;
    max-width: 900px;
    width: 100%;
    max-height: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

/* ----------------
   HEADER
   ---------------- */
header {
    background: var(--color-bg-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
}

header h1 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ----------------
   NAVIGATION
   ---------------- */
nav {
    display: flex;
    gap: var(--spacing-sm);
}

nav a {
    padding: var(--spacing-sm) var(--spacing-lg);
    text-decoration: none;
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
    position: relative;
}

nav a:hover {
    background: var(--color-bg-tertiary);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

nav a:active {
    transform: translateY(0);
    box-shadow: none;
}

nav a.active {
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
    border-color: var(--color-text-primary);
}

/* ----------------
   MAIN CONTENT
   ---------------- */
main {
    overflow-y: scroll;
    background: var(--color-bg-primary);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    min-height: 0;
    max-height: 100%;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: stretch;
}

main h2 {
    text-align: center;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2xl);
    font-size: var(--font-size-3xl);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 1px;
}

/* ----------------
   LOADING & ERROR STATES
   ---------------- */
.loading,
.error {
    text-align: center;
    padding: var(--spacing-2xl);
    font-size: var(--font-size-base);
}

.loading {
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: var(--font-size-sm);
}

.error {
    color: var(--color-error);
    background: rgba(231, 76, 60, 0.05);
    border: 1px solid var(--color-error);
    padding: var(--spacing-lg);
}

/* ----------------
   MATCH CONTAINER (VOTE PAGE)
   ---------------- */
.match-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.browser-option {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
    padding: var(--spacing-xl);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.browser-option:hover {
    transform: translateY(-2px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.06);
    border-color: var(--color-text-tertiary);
}

.browser-option.winner {
    background: var(--color-text-primary);
    border-color: var(--color-text-primary);
    transform: scale(1.03);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.browser-option.winner .browser-name,
.browser-option.winner .browser-elo::before {
    color: var(--color-bg-primary);
}

.browser-option.winner .browser-elo {
    color: rgba(255, 255, 255, 0.9);
}

.browser-logo {
    width: 140px;
    height: 140px;
    object-fit: contain;
    margin: 0 auto var(--spacing-md);
}

.browser-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.browser-elo {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    font-weight: 600;
    margin: var(--spacing-sm) 0;
}

.browser-elo::before {
    content: "ELO: ";
    color: var(--color-text-tertiary);
    font-weight: 400;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.5px;
}

.browser-elo.elo-updated {
    font-variant-numeric: tabular-nums;
}

.elo-change {
    display: inline-block;
    margin-left: var(--spacing-xs);
    font-weight: 700;
    font-size: var(--font-size-sm);
    padding: 2px var(--spacing-xs);
    border-radius: 3px;
    animation: fadeInScale 0.3s ease-out;
}

.elo-increase {
    color: #27ae60;
    background: rgba(39, 174, 96, 0.1);
}

.elo-decrease {
    color: #e74c3c;
    background: rgba(231, 76, 60, 0.1);
}

.browser-option.winner .elo-increase {
    color: #2ecc71;
    background: rgba(46, 204, 113, 0.2);
}

.browser-option.winner .elo-decrease {
    color: #ff6b6b;
    background: rgba(255, 107, 107, 0.2);
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ----------------
   BUTTONS
   ---------------- */
.vote-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    font-weight: 600;
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
    border: 1px solid var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: auto;
}

.vote-btn:hover {
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

.vote-btn:active {
    transform: translateY(0);
    box-shadow: none;
}

.vote-btn:disabled {
    background: var(--color-bg-tertiary);
    color: var(--color-text-tertiary);
    border-color: var(--color-border);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ----------------
   VS DIVIDER
   ---------------- */
.vs {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 2px;
}

/* ----------------
   PODIUM
   ---------------- */
.podium {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
}

.podium-place {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    min-width: 180px;
    transition: transform var(--transition-fast);
}

.podium-place:hover {
    transform: translateY(-4px);
}

.podium-gold {
    background: linear-gradient(135deg, rgba(255, 234, 167, 0.4) 0%, rgba(253, 203, 110, 0.4) 100%);
    border-color: rgba(253, 203, 110, 0.6);
    padding-top: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    order: 2;
}

.podium-silver {
    background: linear-gradient(135deg, rgba(192, 192, 192, 0.3) 0%, rgba(169, 169, 169, 0.3) 100%);
    border-color: rgba(192, 192, 192, 0.6);
    order: 1;
}

.podium-bronze {
    background: linear-gradient(135deg, rgba(205, 127, 50, 0.25) 0%, rgba(184, 115, 51, 0.25) 100%);
    border-color: rgba(205, 127, 50, 0.5);
    order: 3;
}

.podium-rank {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.podium-gold .podium-rank {
    font-size: var(--font-size-2xl);
    color: var(--color-text-primary);
}

.podium-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.podium-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: var(--spacing-xs);
}

.podium-gold .podium-logo {
    width: 100px;
    height: 100px;
}

.podium-name {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
}

.podium-gold .podium-name {
    font-size: var(--font-size-lg);
}

.podium-elo {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.podium-gold .podium-elo {
    font-size: var(--font-size-base);
}

/* ----------------
   LEADERBOARD TABLE
   ---------------- */
.leaderboard-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid var(--color-border);
}

.leaderboard-table th,
.leaderboard-table td {
    padding: var(--spacing-xs);
    text-align: left;
    vertical-align: middle;
}

.leaderboard-table tbody tr:not(:first-child) td {
    border-top: 1px solid var(--color-border-light);
}

.leaderboard-table th {
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
    font-weight: 700;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 1px;
}

.leaderboard-table thead tr {
    border-bottom: 1px solid var(--color-text-primary);
}

.leaderboard-table tbody tr {
    transition: background-color var(--transition-fast);
    border-bottom: 1px solid var(--color-border-light);
}

.leaderboard-table tbody tr:hover {
    background: var(--color-bg-secondary);
}

.leaderboard-table tbody tr:last-child {
    border-bottom: none;
}

/* Rank column */
.leaderboard-table td:first-child {
    font-weight: 700;
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    text-align: left;
    width: 30px;
}

/* Browser name column */
.leaderboard-table td:nth-child(2) {
    font-weight: 700;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.browser-name-cell {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.browser-logo-small {
    width: 24px;
    height: 24px;
    object-fit: contain;
    flex-shrink: 0;
}

/* Numeric columns */
.leaderboard-table td:nth-child(3),
.leaderboard-table th:nth-child(3) {
    font-variant-numeric: tabular-nums;
    color: var(--color-text-secondary);
    text-align: right;
}

.leaderboard-table th:nth-child(3) {
    color: var(--color-bg-primary);
}

/* ----------------
   RESPONSIVE DESIGN
   ---------------- */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
        background-size: 12px 12px;
    }

    .container {
        max-width: 100%;
    }

    header {
        padding: var(--spacing-sm) var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    header h1 {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-xs);
    }

    nav {
        gap: var(--spacing-xs);
    }

    nav a {
        text-align: center;
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.75rem;
    }

    main {
        padding: var(--spacing-md);
    }

    main h2 {
        font-size: var(--font-size-2xl);
    }

    .match-container {
        gap: var(--spacing-xs);
        flex-wrap: nowrap;
    }

    .browser-option {
        min-width: 0;
        padding: var(--spacing-sm);
        gap: var(--spacing-xs);
    }

    .browser-logo {
        width: 70%;
        max-width: 140px;
        height: auto;
        aspect-ratio: 1 / 1;
        margin: 0 auto var(--spacing-xs);
    }

    .browser-name {
        font-size: var(--font-size-sm);
        padding-bottom: var(--spacing-xs);
    }

    .browser-elo {
        font-size: var(--font-size-xs);
        margin: var(--spacing-xs) 0;
    }

    .vs {
        display: none;
    }

    .leaderboard-table {
        font-size: var(--font-size-sm);
    }

    .leaderboard-table th,
    .leaderboard-table td {
        padding: var(--spacing-xxs) var(--spacing-xs);
    }

    .leaderboard-table th {
        font-size: 0.65rem;
    }

    .leaderboard-table td:first-child {
        width: 40px;
        font-size: var(--font-size-base);
    }

    .podium {
        gap: var(--spacing-xs);
        padding: var(--spacing-md) 0;
    }

    .podium-place {
        min-width: 0;
        flex: 1;
        padding: var(--spacing-sm);
    }

    .podium-gold {
        padding-top: var(--spacing-lg);
        padding-bottom: var(--spacing-lg);
    }

    .podium-rank {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-xxs);
    }

    .podium-gold .podium-rank {
        font-size: var(--font-size-lg);
    }

    .podium-logo {
        width: 50px;
        height: 50px;
    }

    .podium-gold .podium-logo {
        width: 60px;
        height: 60px;
    }

    .podium-name {
        font-size: var(--font-size-xs);
    }

    .podium-gold .podium-name {
        font-size: var(--font-size-sm);
    }

    .podium-elo {
        font-size: 0.65rem;
    }

    .podium-gold .podium-elo {
        font-size: var(--font-size-xs);
    }
}

/* ----------------
   FOOTER
   ---------------- */
footer {
    text-align: center;
    padding: var(--spacing-sm) 0 0;
}

footer p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

footer a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

footer a:hover {
    color: var(--color-text-tertiary);
}

/* ----------------
   UTILITY CLASSES
   ---------------- */
.hidden {
    display: none !important;
}

/* Print styles for accessibility */
@media print {
    body {
        background: white;
        background-image: none;
    }

    header,
    main {
        border: 1px solid #000;
    }

    .vote-btn,
    nav {
        display: none;
    }
}