/* DPI Converter Pro v2 – Frontend CSS */

:root {
    --dcp-ink:      #1e293b;
    --dcp-ink2:     #64748b;
    --dcp-ink3:     #94a3b8;
    --dcp-border:   #e2e8f0;
    --dcp-bg:       #f8fafc;
    --dcp-white:    #ffffff;
    --dcp-primary:  #6366f1;
    --dcp-prim-dk:  #4f46e5;
    --dcp-success:  #10b981;
    --dcp-error-bg: #fef2f2;
    --dcp-error-bd: #fca5a5;
    --dcp-error-tx: #991b1b;
    --dcp-radius:   14px;
    --dcp-radius-s: 10px;
    --dcp-shadow:   0 4px 24px rgba(99,102,241,.10), 0 1px 4px rgba(0,0,0,.06);
    --dcp-t:        .2s ease;
}

/* ── Wrapper ── */
.dcp-app {
    max-width: 600px;
    margin: 36px auto;
    padding: 0 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    box-sizing: border-box;
}
.dcp-app *, .dcp-app *::before, .dcp-app *::after { box-sizing: inherit; }

/* ── Card ── */
.dcp-card {
    background: var(--dcp-white);
    border: 1px solid var(--dcp-border);
    border-radius: var(--dcp-radius);
    box-shadow: var(--dcp-shadow);
    padding: 36px 36px 32px;
}
@media (max-width: 520px) { .dcp-card { padding: 24px 18px 20px; } }

/* ── Header ── */
.dcp-header { text-align: center; margin-bottom: 28px; }
.dcp-logo { width: 44px; height: 44px; color: var(--dcp-primary); margin-bottom: 10px; display: block; margin-left: auto; margin-right: auto; }
.dcp-header h2 { margin: 0 0 6px; font-size: 1.5rem; font-weight: 700; color: var(--dcp-ink); letter-spacing: -.02em; }
.dcp-header p  { margin: 0; font-size: .9rem; color: var(--dcp-ink2); }

/* ── Drop zone ── */
.dcp-dropzone {
    display: block;
    border: 2px dashed var(--dcp-border);
    border-radius: var(--dcp-radius-s);
    padding: 36px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color var(--dcp-t), background var(--dcp-t);
    margin-bottom: 24px;
    background: var(--dcp-bg);
    position: relative;
}
.dcp-dropzone:hover, .dcp-dropzone.over { border-color: var(--dcp-primary); background: rgba(99,102,241,.04); }
.dcp-dz-idle svg   { width: 40px; height: 40px; color: var(--dcp-primary); margin-bottom: 10px; }
.dcp-dz-idle span  { display: block; font-size: .95rem; font-weight: 500; color: var(--dcp-ink); margin-bottom: 4px; }
.dcp-dz-idle small { font-size: .8rem; color: var(--dcp-ink3); }

/* Preview */
.dcp-dz-preview { display: flex; align-items: center; gap: 14px; text-align: left; }
.dcp-dz-preview img { width: 68px; height: 68px; object-fit: cover; border-radius: 8px; border: 1px solid var(--dcp-border); flex-shrink: 0; }
.dcp-dz-meta { flex: 1; min-width: 0; }
.dcp-dz-meta strong { display: block; font-size: .9rem; color: var(--dcp-ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dcp-dz-meta span   { font-size: .8rem; color: var(--dcp-ink2); }
.dcp-clear {
    background: none; border: 1px solid var(--dcp-border); border-radius: 50%;
    width: 26px; height: 26px; cursor: pointer; font-size: .8rem;
    color: var(--dcp-ink2); transition: all var(--dcp-t); flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
.dcp-clear:hover { background: var(--dcp-error-bg); border-color: var(--dcp-error-bd); color: var(--dcp-error-tx); }

/* ── DPI row ── */
.dcp-dpi-row { margin-bottom: 24px; }
.dcp-dpi-row > label { display: block; font-size: .8rem; font-weight: 700; color: var(--dcp-ink); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 10px; }
.dcp-presets { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 12px; }
.dcp-preset {
    padding: 5px 13px; background: var(--dcp-bg); border: 1px solid var(--dcp-border);
    border-radius: 20px; font-size: .82rem; font-weight: 600; color: var(--dcp-ink2);
    cursor: pointer; transition: all var(--dcp-t); line-height: 1;
}
.dcp-preset:hover, .dcp-preset.active { background: var(--dcp-primary); border-color: var(--dcp-primary); color: #fff; }
.dcp-dpi-input-wrap { position: relative; display: flex; align-items: center; }
.dcp-dpi-input-wrap input {
    width: 100%; padding: 11px 44px 11px 14px; font-size: 1.05rem; font-weight: 700;
    border: 2px solid var(--dcp-border); border-radius: var(--dcp-radius-s);
    outline: none; transition: border-color var(--dcp-t); color: var(--dcp-ink);
    -moz-appearance: textfield;
}
.dcp-dpi-input-wrap input::-webkit-outer-spin-button,
.dcp-dpi-input-wrap input::-webkit-inner-spin-button { -webkit-appearance: none; }
.dcp-dpi-input-wrap input:focus { border-color: var(--dcp-primary); }
.dcp-dpi-input-wrap span { position: absolute; right: 12px; font-size: .75rem; font-weight: 700; color: var(--dcp-ink3); text-transform: uppercase; pointer-events: none; }

/* ── Error ── */
.dcp-error {
    background: var(--dcp-error-bg); border: 1px solid var(--dcp-error-bd);
    color: var(--dcp-error-tx); border-radius: var(--dcp-radius-s);
    padding: 11px 14px; font-size: .88rem; font-weight: 500; margin-bottom: 16px;
}

/* ── Buttons ── */
.dcp-btn {
    display: flex; align-items: center; justify-content: center; width: 100%;
    padding: 13px 20px; background: linear-gradient(135deg, var(--dcp-primary), var(--dcp-prim-dk));
    color: #fff; border: none; border-radius: var(--dcp-radius-s); font-size: .95rem;
    font-weight: 700; cursor: pointer; transition: all var(--dcp-t); text-decoration: none;
    box-shadow: 0 3px 12px rgba(99,102,241,.35); margin-bottom: 10px; letter-spacing: .01em;
}
.dcp-btn:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 5px 18px rgba(99,102,241,.45); color: #fff; }
.dcp-btn:disabled { opacity: .45; cursor: not-allowed; box-shadow: none; transform: none; }
.dcp-btn-outline { background: transparent; border: 2px solid var(--dcp-primary); color: var(--dcp-primary); box-shadow: none; }
.dcp-btn-outline:hover { background: rgba(99,102,241,.06); color: var(--dcp-primary); }
.dcp-btn-ghost { background: transparent; border: 1px solid var(--dcp-border); color: var(--dcp-ink2); box-shadow: none; }
.dcp-btn-ghost:hover { border-color: var(--dcp-primary); color: var(--dcp-primary); background: rgba(99,102,241,.04); }

/* ── Success panel ── */
.dcp-success-panel { text-align: center; padding-top: 28px; padding-bottom: 28px; }
.dcp-success-icon {
    width: 64px; height: 64px; background: #d1fae5; border-radius: 50%;
    display: flex; align-items: center; justify-content: center; margin: 0 auto 14px;
    color: var(--dcp-success); padding: 14px;
    animation: dcp-pop .35s cubic-bezier(.175,.885,.32,1.275);
}
.dcp-success-icon svg { width: 100%; height: 100%; }
@keyframes dcp-pop { from { transform: scale(0); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.dcp-success-msg { font-size: 1.05rem; font-weight: 600; color: var(--dcp-ink); margin: 0 0 20px; }