/* =========================
   FONTS
========================= */

@font-face {
    font-family: "Cinzel";
    src: url("../../font/Cinzel-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Cinzel";
    src: url("../../font/Cinzel-Medium.ttf") format("truetype");
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Cinzel";
    src: url("../../font/Cinzel-SemiBold.ttf") format("truetype");
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Inter";
    src: url("../../font/Inter-Regular.woff2") format("woff2");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Inter";
    src: url("../../font/Inter-Medium.woff2") format("woff2");
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Inter";
    src: url("../../font/Inter-SemiBold.woff2") format("woff2");
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

:root {
    --color-bg: #0b0b0c;
    --color-bg-secondary: #141416;
    --color-card: #1a1a1d;
    --color-card-hover: #202024;
    --color-text: #eeeeee;
    --color-text-muted: #a5a5a8;
    --color-border: #2a2a2e;
    --color-accent: #b32d2e;
    --color-accent-hover: #d13a3b;
    --color-input: #101012;
    --radius: 3px;
    --container-width: 1240px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    color-scheme: dark;
}

body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top, rgba(179, 45, 46, 0.08), transparent 34rem),
        var(--color-bg);
    color: var(--color-text);
    font-family: Inter, Arial, Helvetica, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
}

button,
input,
textarea {
    font: inherit;
}

button,
input {
    border-radius: var(--radius);
}

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

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
}

.page-shell {
    width: min(calc(100% - 40px), var(--container-width));
    margin: 0 auto;
    padding: clamp(48px, 7vw, 90px) 0 30px;
}

.page-header {
    max-width: 760px;
    margin: 0 auto clamp(42px, 6vw, 70px);
    text-align: center;
}

.eyebrow {
    margin-bottom: 8px;
    color: var(--color-accent);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.page-header h1,
.history-header h2 {
    font-family: Cinzel, Georgia, serif;
    font-weight: 500;
    letter-spacing: 0.08em;
}

.page-header h1 {
    font-size: clamp(2.4rem, 6vw, 4.5rem);
    line-height: 1.1;
    text-transform: uppercase;
}

.page-header h1::after {
    content: "";
    display: block;
    width: 60px;
    height: 2px;
    margin: 24px auto;
    background-color: var(--color-accent);
}

.intro {
    color: var(--color-text-muted);
    font-size: clamp(0.95rem, 1.5vw, 1.05rem);
}

.dice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
    gap: 18px;
}

.dice-card {
    min-width: 0;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 22px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: var(--color-card);
    transition:
        border-color 0.25s ease,
        background-color 0.25s ease,
        transform 0.25s ease;
}

.dice-card:hover,
.dice-card:focus-within {
    border-color: rgba(179, 45, 46, 0.65);
    background-color: var(--color-card-hover);
    transform: translateY(-2px);
}

.dice-card-header {
    min-height: 74px;
    display: flex;
    align-items: center;
    gap: 18px;
}

.dice-card-header img {
    width: clamp(54px, 6vw, 70px);
    height: clamp(54px, 6vw, 70px);
    object-fit: contain;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.dice-card:hover .dice-card-header img,
.dice-card:focus-within .dice-card-header img {
    filter: grayscale(0%);
}

.dice-card-header h2 {
    font-family: Cinzel, Georgia, serif;
    font-size: clamp(1.45rem, 3vw, 1.8rem);
    font-weight: 500;
    letter-spacing: 0.06em;
}

.custom-label {
    margin-bottom: 2px;
    color: var(--color-accent);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.dice-controls {
    display: grid;
    gap: 16px;
}

.field {
    display: grid;
    gap: 7px;
}

.field > span,
.modifier-sign legend {
    color: var(--color-text-muted);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    text-transform: uppercase;
}

.field input {
    width: 100%;
    min-height: 44px;
    padding: 9px 12px;
    border: 1px solid var(--color-border);
    background-color: var(--color-input);
    color: var(--color-text);
    font-weight: 600;
    transition: border-color 0.2s ease;
}

.field input:focus {
    border-color: var(--color-accent);
    outline: none;
}

.modifier-sign {
    min-width: 0;
    padding: 0;
    border: 0;
}

.modifier-sign legend {
    margin-bottom: 7px;
}

.modifier-sign label {
    min-width: 58px;
    min-height: 42px;
    margin-right: 8px;
    padding: 7px 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: var(--color-input);
    cursor: pointer;
}

.modifier-sign input {
    accent-color: var(--color-accent);
}

.result-field {
    margin-top: 2px;
}

.dice-result {
    min-height: 52px;
    padding: 9px 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: #0d0d0f;
    color: var(--color-text);
    font-size: 1.3rem;
    font-weight: 600;
    text-align: center;
}

.dice-actions {
    margin-top: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.button {
    min-height: 44px;
    padding: 10px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition:
        background-color 0.22s ease,
        border-color 0.22s ease,
        color 0.22s ease;
}

.button-primary {
    background-color: var(--color-accent);
    color: #ffffff;
}

.button-primary:hover,
.button-primary:focus-visible {
    background-color: var(--color-accent-hover);
}

.button-secondary {
    border-color: var(--color-border);
    background-color: transparent;
    color: var(--color-text-muted);
}

.button-secondary:hover,
.button-secondary:focus-visible {
    border-color: var(--color-accent);
    color: var(--color-text);
}

.history-panel {
    margin-top: clamp(32px, 5vw, 56px);
    padding: clamp(22px, 4vw, 34px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: var(--color-bg-secondary);
}

.history-header {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
}

.history-header h2 {
    font-size: clamp(1.35rem, 3vw, 1.8rem);
}

#rollHistory {
    width: 100%;
    min-height: 240px;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: var(--color-input);
    color: var(--color-text-muted);
    line-height: 1.55;
    resize: vertical;
}

#rollHistory::placeholder {
    color: #707074;
}

.site-footer {
    padding: 30px 0 0;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    text-align: center;
}

/* =========================
   BACK TO TOP
========================= */

.back-to-top {
    position: fixed;
    right: clamp(16px, 2vw, 28px);
    bottom: clamp(16px, 2vw, 28px);
    z-index: 900;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-accent);
    border-radius: var(--radius);
    background: rgba(20, 20, 22, 0.92);
    color: var(--color-text);
    visibility: hidden;
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    cursor: pointer;
    backdrop-filter: blur(8px);
    transition:
        opacity 0.25s ease,
        transform 0.25s ease,
        background-color 0.25s ease,
        color 0.25s ease,
        visibility 0.25s ease;
}

.back-to-top.visible {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover,
.back-to-top:focus-visible {
    background-color: var(--color-accent);
    color: #ffffff;
}

.back-to-top svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 0.25s ease;
}

.back-to-top:hover svg,
.back-to-top:focus-visible svg {
    transform: translateY(-3px);
}

@media (max-width: 700px) {
    .page-shell {
        width: min(calc(100% - 30px), var(--container-width));
        padding-top: 40px;
    }

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

    .dice-card {
        padding: 20px;
    }

    .dice-controls {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .modifier-sign,
    .result-field {
        grid-column: 1 / -1;
    }

    .history-header {
        align-items: stretch;
        flex-direction: column;
    }

    .history-header .button {
        width: 100%;
    }
}

@media (max-width: 420px) {
    .dice-controls {
        grid-template-columns: 1fr;
    }

    .modifier-sign,
    .result-field {
        grid-column: auto;
    }

    .dice-actions {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}