/* =========================================================
   Case Converter Tool – style.css
   Clean, editorial aesthetic: dark slate + electric amber
   ========================================================= */

/* ── Google Fonts ─────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@700;800&family=DM+Mono:wght@400;500&family=DM+Sans:wght@400;500;600&display=swap');

/* ── Custom Properties ────────────────────────────────── */
.cct-wrapper {
    --cct-bg:          #0f1117;
    --cct-surface:     #1a1d27;
    --cct-border:      #2a2e3e;
    --cct-accent:      #f5a623;
    --cct-accent-dim:  #c47f0d;
    --cct-accent-glow: rgba(245, 166, 35, 0.18);
    --cct-text:        #e8eaf0;
    --cct-muted:       #6b7080;
    --cct-success:     #4ade80;
    --cct-radius:      10px;
    --cct-radius-lg:   16px;
    --cct-font-display:'Syne', sans-serif;
    --cct-font-mono:   'DM Mono', monospace;
    --cct-font-body:   'DM Sans', sans-serif;
    --cct-shadow:      0 4px 32px rgba(0,0,0,0.45);
    --cct-trans:       all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Wrapper ──────────────────────────────────────────── */
.cct-wrapper {
    box-sizing: border-box;
    background: var(--cct-bg);
    border-radius: var(--cct-radius-lg);
    border: 1px solid var(--cct-border);
    padding: 40px 40px 36px;
    max-width: 860px;
    margin: 32px auto;
    font-family: var(--cct-font-body);
    color: var(--cct-text);
    box-shadow: var(--cct-shadow);
    position: relative;
    overflow: hidden;
}

/* Subtle diagonal grain overlay */
.cct-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        repeating-linear-gradient(
            -45deg,
            transparent,
            transparent 4px,
            rgba(255,255,255,0.012) 4px,
            rgba(255,255,255,0.012) 5px
        );
    pointer-events: none;
    z-index: 0;
}

.cct-wrapper > * { position: relative; z-index: 1; }

/* ── Header ───────────────────────────────────────────── */
.cct-header {
    margin-bottom: 32px;
}

.cct-title {
    font-family: var(--cct-font-display);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0 0 10px;
    line-height: 1.1;
    color: var(--cct-text);
    /* accent underline */
    background: linear-gradient(90deg, var(--cct-accent) 0%, #ff9f43 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cct-description {
    font-size: 0.94rem;
    color: var(--cct-muted);
    margin: 0;
    max-width: 600px;
    line-height: 1.6;
}

/* ── Conversion Button Grid ───────────────────────────── */
.cct-btn-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 18px;
}

@media (max-width: 580px) {
    .cct-btn-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 360px) {
    .cct-btn-grid {
        grid-template-columns: 1fr;
    }
}

.cct-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 14px 10px 12px;
    background: var(--cct-surface);
    border: 1px solid var(--cct-border);
    border-radius: var(--cct-radius);
    color: var(--cct-text);
    cursor: pointer;
    font-family: var(--cct-font-body);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: var(--cct-trans);
    user-select: none;
    -webkit-user-select: none;
    position: relative;
    overflow: hidden;
}

.cct-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--cct-accent-glow);
    opacity: 0;
    transition: opacity 0.15s ease;
}

.cct-btn:hover {
    border-color: var(--cct-accent);
    color: var(--cct-accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 166, 35, 0.15);
}

.cct-btn:hover::after { opacity: 1; }

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

.cct-btn:focus-visible {
    outline: 2px solid var(--cct-accent);
    outline-offset: 2px;
}

.cct-btn-icon {
    font-family: var(--cct-font-mono);
    font-size: 1.15rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: 0;
}

.cct-btn-label {
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

/* ── Textarea Wrapper ─────────────────────────────────── */
.cct-textarea-wrap {
    position: relative;
    margin-bottom: 14px;
}

.cct-textarea {
    width: 100%;
    min-height: 220px;
    background: var(--cct-surface);
    border: 1px solid var(--cct-border);
    border-radius: var(--cct-radius);
    color: var(--cct-text);
    font-family: var(--cct-font-mono);
    font-size: 0.93rem;
    line-height: 1.7;
    padding: 16px 18px 48px; /* extra bottom for stats bar */
    resize: vertical;
    box-sizing: border-box;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
    outline: none;
    caret-color: var(--cct-accent);
}

.cct-textarea::placeholder {
    color: var(--cct-muted);
    font-family: var(--cct-font-body);
    font-style: italic;
}

.cct-textarea:focus {
    border-color: var(--cct-accent);
    box-shadow: 0 0 0 3px var(--cct-accent-glow);
}

/* ── Stats Bar ────────────────────────────────────────── */
.cct-stats {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(26, 29, 39, 0.9);
    border-top: 1px solid var(--cct-border);
    border-radius: 0 0 var(--cct-radius) var(--cct-radius);
    font-size: 0.75rem;
    color: var(--cct-muted);
    backdrop-filter: blur(4px);
    flex-wrap: wrap;
}

.cct-stat {
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.cct-stat-value {
    font-family: var(--cct-font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--cct-accent);
}

.cct-stat-sep {
    color: var(--cct-border);
    font-size: 0.9rem;
}

/* ── Action Bar ───────────────────────────────────────── */
.cct-action-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.cct-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: var(--cct-radius);
    border: 1px solid transparent;
    font-family: var(--cct-font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--cct-trans);
    user-select: none;
    -webkit-user-select: none;
}

.cct-action-btn svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
}

.cct-action-btn:focus-visible {
    outline: 2px solid var(--cct-accent);
    outline-offset: 2px;
}

/* Copy button – filled accent */
.cct-copy {
    background: var(--cct-accent);
    color: #0f1117;
    border-color: var(--cct-accent);
}

.cct-copy:hover {
    background: #ffc14a;
    border-color: #ffc14a;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(245, 166, 35, 0.3);
}

.cct-copy:active { transform: translateY(0); box-shadow: none; }

/* Copy success state */
.cct-copy.cct-copied {
    background: var(--cct-success);
    border-color: var(--cct-success);
}

/* Clear button – ghost */
.cct-clear {
    background: transparent;
    color: var(--cct-muted);
    border-color: var(--cct-border);
}

.cct-clear:hover {
    color: #ff6b6b;
    border-color: #ff6b6b;
    background: rgba(255, 107, 107, 0.08);
    transform: translateY(-1px);
}

.cct-clear:active { transform: translateY(0); }

/* ── Toast ────────────────────────────────────────────── */
.cct-toast {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: var(--cct-success);
    color: #0f1117;
    font-family: var(--cct-font-body);
    font-size: 0.82rem;
    font-weight: 700;
    padding: 8px 16px;
    border-radius: 6px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.22s ease, transform 0.22s ease;
    z-index: 10;
    white-space: nowrap;
}

.cct-toast.cct-toast--show {
    opacity: 1;
    transform: translateY(0);
}

/* ── Screen-reader only ───────────────────────────────── */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* ── Responsive tweaks ────────────────────────────────── */
@media (max-width: 640px) {
    .cct-wrapper {
        padding: 24px 18px 24px;
        margin: 16px auto;
    }
    .cct-action-bar {
        flex-direction: column;
    }
    .cct-action-btn {
        width: 100%;
        justify-content: center;
    }
    .cct-stats {
        gap: 6px;
        font-size: 0.7rem;
    }
}