/* ==========================================================================
 * coinflip.css — Coin Flip tool styles
 * ==========================================================================
 * Tool-specific CSS for the Coin Flip page. Leverages base.css box, button,
 * and layout utilities. Only adds styles specific to this tool's layout.
 * ======================================================================== */

/* --------------------------------------------------------------------------
 * Coin stage — perspective container
 * ---------------------------------------------------------------------- */

.cf-coin-stage {
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 800px;
    padding: 2rem 0 1.5rem;
}

/* --------------------------------------------------------------------------
 * Coin element — 3D rotating disc
 * ---------------------------------------------------------------------- */

.cf-coin {
    position: relative;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    transform-style: preserve-3d;
    transition: transform 0.1s ease;
}

.cf-coin-face {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading, inherit);
    font-size: 1.3rem;
    font-weight: 700;
    text-align: center;
    padding: 0.5rem;
    word-break: break-word;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border: 4px solid var(--color-accent2);
    box-shadow: 0 0 18px rgba(0, 0, 0, 0.3), inset 0 0 12px rgba(0, 0, 0, 0.15);
}

/* Heads — front face */
.cf-coin-heads {
    background: linear-gradient(145deg, var(--color-accent2), #e6b85e);
    color: var(--color-bg);
}

/* Tails — back face, rotated 180° */
.cf-coin-tails {
    background: linear-gradient(145deg, var(--color-accent3), #d45a5f);
    color: var(--color-bg);
    transform: rotateY(180deg);
}

/* --------------------------------------------------------------------------
 * Flip animations — keyframes for heads & tails outcomes
 * ---------------------------------------------------------------------- */

/* Land on tails (back face up): odd half-turn count (1260°) → back face.
   Heads uses cf-flip-to-heads-corrected (1440°, even) → front face. */
@keyframes cf-flip-to-heads-corrected {
    0%   { transform: rotateY(0deg); }
    100% { transform: rotateY(1440deg); }
}

@keyframes cf-flip-to-tails {
    0%   { transform: rotateY(0deg); }
    100% { transform: rotateY(1260deg); }
}

.cf-coin.cf-anim-heads {
    animation: cf-flip-to-heads-corrected 0.9s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}

.cf-coin.cf-anim-tails {
    animation: cf-flip-to-tails 0.9s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}

/* Static (no animation) positioning */
.cf-coin.cf-show-heads {
    transform: rotateY(0deg);
}

.cf-coin.cf-show-tails {
    transform: rotateY(180deg);
}

/* --------------------------------------------------------------------------
 * Actions row (flip button)
 * ---------------------------------------------------------------------- */

.cf-actions {
    display: flex;
    justify-content: center;
    padding-bottom: 0.5rem;
}

#cf-flip-btn {
    min-width: 7rem;
    font-size: 1.1rem;
    text-align: center;
}

/* --------------------------------------------------------------------------
 * Result display
 * ---------------------------------------------------------------------- */

.cf-result {
    text-align: center;
    font-size: 1.4rem;
    font-family: var(--font-heading, inherit);
    margin: 0;
    padding: 0.5rem 0;
    color: var(--color-text);
    min-height: 2.2rem;
}

.cf-result-value {
    color: var(--color-accent2);
    font-weight: 700;
}

/* --------------------------------------------------------------------------
 * Settings panel
 * ---------------------------------------------------------------------- */

.cf-settings {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
}

.cf-setting-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.cf-setting-group label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-family: var(--font-heading, inherit);
}

.cf-setting-group input[type="text"] {
    width: 9rem;
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    background: var(--color-bg-sunken);
    color: var(--color-text);
    font-size: 0.95rem;
    font-family: inherit;
}

.cf-setting-group input[type="text"]:focus {
    outline: 2px solid var(--color-accent1);
    outline-offset: 1px;
}

/* Toggle group — horizontal layout */
.cf-toggle-group {
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

.cf-toggle-group input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--color-accent2);
    cursor: pointer;
}

#cf-reset-names-btn {
    width: auto;
    font-size: 0.85rem;
    text-align: center;
}

/* --------------------------------------------------------------------------
 * Focus-visible states for keyboard navigation
 * ---------------------------------------------------------------------- */

#cf-flip-btn:focus-visible,
#cf-reset-names-btn:focus-visible {
    outline: 2px solid var(--color-accent1);
    outline-offset: 2px;
}

/* --------------------------------------------------------------------------
 * Responsive: narrow viewports
 * ---------------------------------------------------------------------- */

@media screen and (max-width: 480px) {
    .cf-coin {
        width: 130px;
        height: 130px;
    }

    .cf-coin-face {
        font-size: 1.1rem;
    }

    .cf-result {
        font-size: 1.2rem;
    }

    .cf-settings {
        flex-direction: column;
        align-items: stretch;
    }

    .cf-setting-group input[type="text"] {
        width: 100%;
    }

    #cf-flip-btn,
    #cf-reset-names-btn {
        min-height: 44px;
        min-width: 44px;
    }
}

@media screen and (max-width: 360px) {
    .cf-coin {
        width: 110px;
        height: 110px;
    }

    .cf-coin-face {
        font-size: 0.95rem;
        padding: 0.3rem;
    }

    .cf-result {
        font-size: 1.1rem;
    }

    .cf-coin-stage {
        padding: 1.5rem 0 1rem;
    }
}

/* --------------------------------------------------------------------------
 * Reduced motion preference
 * ---------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    .cf-coin.cf-anim-heads,
    .cf-coin.cf-anim-tails {
        animation: none;
    }

    .cf-coin {
        transition: none;
    }
}