/* ============================ Design tokens ============================ */
:root {
    color-scheme: dark;

    --bg-0: #090b11;
    --bg-1: #0e1220;
    --blob-a: #6d5cff;
    --blob-b: #10b6c9;
    --blob-c: #d64cff;
    --blob-opacity: 0.42;

    --card-bg: rgba(22, 26, 39, 0.62);
    --card-border: rgba(255, 255, 255, 0.10);
    --card-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.65);

    --text: #eef1fb;
    --text-dim: #9aa3bd;

    --field-bg: rgba(9, 11, 20, 0.55);
    --field-border: rgba(255, 255, 255, 0.10);
    --field-border-focus: rgba(124, 140, 255, 0.75);

    --accent: #7c8cff;
    --accent-2: #57e0d6;
    --accent-contrast: #0a0c16;

    --danger: #ff6b81;
    --warning: #ffc15e;
    --ok: #58e08a;

    --radius: 14px;
    --radius-lg: 24px;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --speed: 0.28s;
}

[data-theme="light"] {
    color-scheme: light;

    --bg-0: #eef1f9;
    --bg-1: #e3e8f6;
    --blob-a: #7c8cff;
    --blob-b: #37c7d4;
    --blob-c: #c86bff;
    --blob-opacity: 0.35;

    --card-bg: rgba(255, 255, 255, 0.72);
    --card-border: rgba(20, 28, 60, 0.10);
    --card-shadow: 0 30px 70px -24px rgba(38, 51, 105, 0.35);

    --text: #1a2138;
    --text-dim: #5c667f;

    --field-bg: rgba(255, 255, 255, 0.72);
    --field-border: rgba(20, 28, 60, 0.12);
    --field-border-focus: rgba(90, 108, 240, 0.7);

    --accent: #5a6cf0;
    --accent-2: #17a8b8;
    --accent-contrast: #ffffff;
}

@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
        color-scheme: light;
        --bg-0: #eef1f9;
        --bg-1: #e3e8f6;
        --blob-a: #7c8cff;
        --blob-b: #37c7d4;
        --blob-c: #c86bff;
        --blob-opacity: 0.35;
        --card-bg: rgba(255, 255, 255, 0.72);
        --card-border: rgba(20, 28, 60, 0.10);
        --card-shadow: 0 30px 70px -24px rgba(38, 51, 105, 0.35);
        --text: #1a2138;
        --text-dim: #5c667f;
        --field-bg: rgba(255, 255, 255, 0.72);
        --field-border: rgba(20, 28, 60, 0.12);
        --field-border-focus: rgba(90, 108, 240, 0.7);
        --accent: #5a6cf0;
        --accent-2: #17a8b8;
        --accent-contrast: #ffffff;
    }
}

/* ============================ Base ============================ */
* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(16px, 4vw, 40px);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(1200px 800px at 50% -10%, var(--bg-1), transparent 60%),
        var(--bg-0);
    transition: background var(--speed) var(--ease), color var(--speed) var(--ease);
    overflow-x: hidden;
}

main {
    width: 100%;
    display: flex;
    justify-content: center;
}

/* ============================ Animated background ============================ */
clip-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

clip-bg .blob {
    position: absolute;
    width: 46vmax;
    height: 46vmax;
    border-radius: 50%;
    filter: blur(70px);
    opacity: var(--blob-opacity);
    mix-blend-mode: screen;
    will-change: transform;
}

[data-theme="light"] clip-bg .blob,
:root:not([data-theme="dark"]) clip-bg .blob {
    mix-blend-mode: multiply;
}

clip-bg .blob-a {
    background: var(--blob-a);
    top: -12vmax;
    left: -8vmax;
    animation: drift-a 22s var(--ease) infinite alternate;
}

clip-bg .blob-b {
    background: var(--blob-b);
    bottom: -14vmax;
    right: -10vmax;
    animation: drift-b 26s var(--ease) infinite alternate;
}

clip-bg .blob-c {
    background: var(--blob-c);
    top: 30%;
    left: 40%;
    animation: drift-c 30s var(--ease) infinite alternate;
}

@keyframes drift-a {
    to { transform: translate(18vmax, 12vmax) scale(1.15); }
}

@keyframes drift-b {
    to { transform: translate(-16vmax, -10vmax) scale(1.1); }
}

@keyframes drift-c {
    to { transform: translate(-12vmax, 14vmax) scale(0.9); }
}

/* ============================ Theme toggle ============================ */
theme-toggle {
    position: fixed;
    top: clamp(14px, 3vw, 26px);
    right: clamp(14px, 3vw, 26px);
    z-index: 10;
}

.toggle-btn {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    color: var(--text);
    cursor: pointer;
    transition: transform var(--speed) var(--ease), border-color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.toggle-btn:hover {
    transform: translateY(-2px) rotate(-12deg);
    border-color: var(--field-border-focus);
}

.toggle-btn:active {
    transform: scale(0.9);
}

.toggle-btn svg {
    width: 20px;
    height: 20px;
    transition: opacity var(--speed) var(--ease), transform var(--speed) var(--ease);
}

.toggle-btn .icon-sun { display: none; }
[data-theme="light"] .toggle-btn .icon-sun,
:root:not([data-theme="dark"]) .toggle-btn .icon-sun { display: block; }
[data-theme="light"] .toggle-btn .icon-moon,
:root:not([data-theme="dark"]) .toggle-btn .icon-moon { display: none; }

/* ============================ Card ============================ */
clip-app {
    width: min(680px, 100%);
}

clip-app:not(:defined) {
    opacity: 0;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(22px) saturate(1.2);
    padding: clamp(20px, 3.5vw, 34px);
    animation: card-in 0.6s var(--ease) both;
    transition: background var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

@keyframes card-in {
    from { opacity: 0; transform: translateY(16px) scale(0.985); }
    to { opacity: 1; transform: none; }
}

.head {
    display: flex;
    align-items: center;
    gap: 11px;
    margin-bottom: 20px;
}

.logo {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    color: var(--accent-contrast);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 8px 22px -8px var(--accent);
}

.logo svg { width: 19px; height: 19px; }

.title {
    margin: 0;
    font-size: 1.28rem;
    font-weight: 680;
    letter-spacing: -0.02em;
}

.subtitle {
    margin: 2px 0 0;
    font-size: 0.82rem;
    color: var(--text-dim);
}

/* ============================ Editor ============================ */
.field-wrap {
    position: relative;
}

.field {
    width: 100%;
    min-height: 240px;
    max-height: 52dvh;
    resize: vertical;
    padding: 16px 17px;
    border-radius: var(--radius);
    border: 1px solid var(--field-border);
    background: var(--field-bg);
    color: var(--text);
    font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
    font-size: 0.95rem;
    line-height: 1.55;
    tab-size: 4;
    outline: none;
    transition: border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease), background var(--speed) var(--ease);
}

.field::placeholder { color: var(--text-dim); }

.field:focus {
    border-color: var(--field-border-focus);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent);
}

.field[readonly] {
    color: var(--text-dim);
    cursor: default;
}

.foot {
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.counter {
    font-variant-numeric: tabular-nums;
    font-size: 0.83rem;
    color: var(--text-dim);
    transition: color var(--speed) var(--ease);
}

.counter.near { color: var(--warning); }
.counter.over { color: var(--danger); }
.counter.over.shake { animation: shake 0.35s var(--ease); }

@keyframes shake {
    10%, 90% { transform: translateX(-1px); }
    30%, 70% { transform: translateX(3px); }
    50% { transform: translateX(-4px); }
}

/* ============================ Buttons ============================ */
.btn {
    appearance: none;
    border: 0;
    cursor: pointer;
    font: inherit;
    font-weight: 620;
    font-size: 0.92rem;
    padding: 12px 22px;
    border-radius: 12px;
    color: var(--accent-contrast);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 12px 26px -12px var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    white-space: nowrap;
    transition: transform var(--speed) var(--ease), box-shadow var(--speed) var(--ease), opacity var(--speed) var(--ease), filter var(--speed) var(--ease);
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 18px 34px -12px var(--accent);
}

.btn:active:not(:disabled) { transform: translateY(0) scale(0.97); }

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: none;
    filter: saturate(0.6);
}

.btn-ghost {
    color: var(--text);
    background: transparent;
    border: 1px solid var(--field-border);
    box-shadow: none;
}

.btn-ghost:hover:not(:disabled) {
    border-color: var(--field-border-focus);
    transform: translateY(-2px);
    box-shadow: none;
}

.spinner {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid color-mix(in srgb, var(--accent-contrast) 40%, transparent);
    border-top-color: var(--accent-contrast);
    animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ============================ Result / view ============================ */
.result {
    margin-top: 18px;
    display: grid;
    gap: 12px;
    overflow: hidden;
    animation: reveal 0.5s var(--ease) both;
}

@keyframes reveal {
    from { opacity: 0; transform: translateY(-8px); max-height: 0; }
    to { opacity: 1; transform: none; max-height: 260px; }
}

.result-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--ok);
    font-weight: 600;
}

.result-label svg {
    width: 18px;
    height: 18px;
    animation: pop 0.4s var(--ease) both;
}

@keyframes pop {
    0% { transform: scale(0); }
    70% { transform: scale(1.25); }
    100% { transform: scale(1); }
}

.url-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.url-input {
    flex: 1;
    min-width: 0;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--field-border);
    background: var(--field-bg);
    color: var(--text);
    font-family: ui-monospace, Menlo, Consolas, monospace;
    font-size: 0.9rem;
    text-overflow: ellipsis;
    outline: none;
}

.actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.msg {
    margin-top: 14px;
    padding: 11px 14px;
    border-radius: 12px;
    font-size: 0.88rem;
    border: 1px solid transparent;
    animation: reveal 0.4s var(--ease) both;
}

.msg.error {
    color: var(--danger);
    background: color-mix(in srgb, var(--danger) 14%, transparent);
    border-color: color-mix(in srgb, var(--danger) 40%, transparent);
}

.copied-flash {
    color: var(--ok);
    font-size: 0.82rem;
    font-weight: 600;
    align-self: center;
    animation: reveal 0.3s var(--ease) both;
}

/* ============================ Motion preferences ============================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}

@media (max-width: 480px) {
    .foot { flex-direction: column; align-items: stretch; }
    .foot .btn { justify-content: center; }
    .counter { text-align: center; }
}

/* ============================ File upload + view ============================ */
.btn { text-decoration: none; }

.foot-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.field[hidden] { display: none; }

/* selected-file chip in the editor */
.file-preview[hidden] { display: none; }

.file-chip {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    border-radius: var(--radius);
    border: 1px solid var(--field-border);
    background: var(--field-bg);
    animation: chip-in 0.4s var(--ease) both;
}

@keyframes chip-in {
    from { opacity: 0; transform: translateY(10px) scale(0.97); }
    to { opacity: 1; transform: none; }
}

.chip-thumb {
    width: 84px;
    height: 84px;
    object-fit: cover;
    border-radius: 10px;
    flex: none;
    box-shadow: 0 8px 20px -10px rgba(0, 0, 0, 0.5);
    animation: pop 0.45s var(--ease) both;
}

.chip-icon {
    width: 84px;
    height: 84px;
    flex: none;
    display: grid;
    place-items: center;
    position: relative;
    border-radius: 10px;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 14%, transparent);
}

.chip-icon svg { width: 40px; height: 40px; }

.chip-ext, .badge-ext {
    position: absolute;
    bottom: 8px;
    font-size: 0.6rem;
    font-weight: 800;
    letter-spacing: 0.03em;
    padding: 1px 5px;
    border-radius: 5px;
    color: var(--accent-contrast);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.chip-meta {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
    flex: 1;
}

.chip-name {
    font-weight: 620;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chip-size { font-size: 0.82rem; color: var(--text-dim); }

.chip-remove {
    flex: none;
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    border: 1px solid var(--field-border);
    background: transparent;
    color: var(--text-dim);
    cursor: pointer;
    transition: transform var(--speed) var(--ease), color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.chip-remove:hover { color: var(--danger); border-color: var(--danger); transform: rotate(90deg); }
.chip-remove svg { width: 16px; height: 16px; }

/* drag-and-drop overlay */
.drop-overlay {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: grid;
    place-items: center;
    background: color-mix(in srgb, var(--bg-0) 72%, transparent);
    backdrop-filter: blur(8px);
    animation: fade-in 0.2s var(--ease) both;
}

.drop-overlay[hidden] { display: none; }

.drop-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 48px 68px;
    border-radius: var(--radius-lg);
    border: 2px dashed var(--accent);
    color: var(--accent);
    font-weight: 640;
    font-size: 1.1rem;
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    animation: drop-pulse 1.4s var(--ease) infinite;
}

.drop-inner svg { width: 54px; height: 54px; animation: bob 1.4s var(--ease) infinite; }

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes drop-pulse {
    0%, 100% { transform: scale(1); border-color: var(--accent); }
    50% { transform: scale(1.03); border-color: var(--accent-2); }
}
@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* shared paste: image */
.image-wrap {
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.preview-img {
    max-width: 100%;
    max-height: 54dvh;
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    opacity: 0;
    transform: scale(0.96);
    filter: blur(10px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease), filter 0.6s var(--ease);
}

.preview-img.loaded { opacity: 1; transform: none; filter: none; }

.file-line, .file-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    align-items: center;
    min-width: 0;
}

.fname { font-weight: 620; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }
.fmeta { font-size: 0.82rem; color: var(--text-dim); }

/* shared paste: non-image file card */
.file-card {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 22px;
    border-radius: var(--radius);
    border: 1px solid var(--field-border);
    background: var(--field-bg);
    animation: card-in 0.5s var(--ease) both;
}

.file-info { align-items: flex-start; }

.file-badge {
    position: relative;
    width: 72px;
    height: 72px;
    flex: none;
    display: grid;
    place-items: center;
    border-radius: 14px;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    animation: pop 0.5s var(--ease) both;
}

.file-badge svg { width: 38px; height: 38px; }

.btn-download svg { width: 18px; height: 18px; }

.view-slot .actions { margin-top: 18px; justify-content: center; }

.loading { display: grid; place-items: center; padding: 40px; }
.loading .spinner { width: 26px; height: 26px; border-width: 3px; border-top-color: var(--accent); border-color: color-mix(in srgb, var(--accent) 30%, transparent); border-top-color: var(--accent); }