/* ─── Reset & Base ─── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg:          #080e1a;
    --surface:     #0d1526;
    --surface-2:   #111d33;
    --border:      #1e2f4a;
    --border-soft: #172137;
    --accent:      #3b9eff;
    --accent-glow: rgba(59,158,255,0.18);
    --accent-dark: #1a6fd4;
    --text:        #dce8f8;
    --text-muted:  #5f7da0;
    --text-dim:    #3a5272;
    --success:     #22c55e;
    --error:       #f43f5e;
    --error-bg:    rgba(244,63,94,0.1);
    --radius:      12px;
    --radius-sm:   8px;
    --font-mono:   'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --font-sans:   'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --shadow:      0 4px 24px rgba(0,0,0,0.4);
    --shadow-lg:   0 8px 48px rgba(0,0,0,0.6);
}

html { font-size: 15px; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ─── Page Layout ─── */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ─── Header ─── */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.4rem 0;
    border-bottom: 1px solid var(--border-soft);
    margin-bottom: 2.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    color: var(--text);
    text-decoration: none;
}

.logo svg { color: var(--accent); }

.header-badge {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-glow);
    border: 1px solid rgba(59,158,255,0.25);
    padding: 0.28rem 0.65rem;
    border-radius: 999px;
}

.btn-new-paste {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
    background: var(--surface-2);
    border: 1px solid var(--border);
    padding: 0.45rem 1rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: border-color 0.18s, background 0.18s;
}

.btn-new-paste:hover {
    border-color: var(--accent);
    background: var(--accent-glow);
    text-decoration: none;
}

/* ─── Main Card ─── */
.main-card {
    flex: 1;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem 2.25rem;
    box-shadow: var(--shadow);
}

.card-header {
    margin-bottom: 1.75rem;
}

.card-header h1 {
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 0.3rem;
}

.card-header p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ─── Form Fields ─── */
.field { margin-bottom: 1rem; }

.textarea-wrapper { position: relative; }

textarea {
    width: 100%;
    min-height: 280px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    padding: 1rem 1.1rem 2.5rem;
    resize: vertical;
    outline: none;
    transition: border-color 0.18s, box-shadow 0.18s;
    tab-size: 4;
}

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

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

.char-counter {
    position: absolute;
    bottom: 0.6rem;
    right: 0.85rem;
    font-size: 0.72rem;
    color: var(--text-dim);
    font-family: var(--font-mono);
    pointer-events: none;
}

/* ─── Options Row ─── */
.options-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.field-group label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

select,
input[type="password"],
input[type="text"] {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    padding: 0.6rem 0.85rem;
    outline: none;
    transition: border-color 0.18s, box-shadow 0.18s;
    appearance: none;
    -webkit-appearance: none;
}

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235f7da0' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.2rem;
}

select:focus,
input[type="password"]:focus,
input[type="text"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

select option { background: var(--surface-2); }

/* ─── Buttons ─── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.7rem 1.4rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.18s, transform 0.1s, box-shadow 0.18s;
}

.btn-primary:hover {
    background: var(--accent-dark);
    box-shadow: 0 0 20px var(--accent-glow);
    text-decoration: none;
}

.btn-primary:active { transform: scale(0.98); }

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--surface-2);
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.85rem;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: color 0.18s, border-color 0.18s, background 0.18s;
}

.btn-icon:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-glow);
}

/* ─── Result Box ─── */
.result-box {
    margin-top: 1.5rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-left: 3px solid var(--success);
    border-radius: var(--radius-sm);
    padding: 1.25rem 1.4rem;
}

.result-box[hidden] { display: none; }

.result-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--success);
    margin-bottom: 1rem;
}

.result-link-row {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.85rem;
}

.result-link-row input[type="text"] {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: text;
}

.btn-copy {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.18s, border-color 0.18s, color 0.18s;
}

.btn-copy:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-copy.copied {
    color: var(--success);
    border-color: var(--success);
}

.result-open-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.18s;
}

.result-open-link:hover {
    color: var(--accent);
    text-decoration: none;
}

/* ─── Paste View ─── */
.paste-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.meta-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--surface-2);
    border: 1px solid var(--border);
    padding: 0.28rem 0.65rem;
    border-radius: 999px;
}

.paste-box {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.paste-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.85rem;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
}

.paste-toolbar-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-dim);
}

#pasteContent {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.75;
    color: var(--text);
    padding: 1.25rem 1.4rem;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-x: auto;
    margin: 0;
}

/* ─── Password Prompt ─── */
.lock-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--accent-glow);
    border: 1px solid rgba(59,158,255,0.3);
    border-radius: 14px;
    margin-bottom: 1.25rem;
    color: var(--accent);
}

.password-form { max-width: 380px; }

.input-password {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.9rem;
    padding: 0.7rem 0.95rem;
    outline: none;
    margin-bottom: 1rem;
    transition: border-color 0.18s, box-shadow 0.18s;
}

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

/* ─── Alerts ─── */
.alert {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.alert-error {
    background: var(--error-bg);
    border: 1px solid rgba(244,63,94,0.3);
    color: var(--error);
}

/* ─── Error Page ─── */
.error-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 2rem;
    min-height: 320px;
}

.error-code {
    font-size: 5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--border);
    line-height: 1;
    margin-bottom: 0.75rem;
}

.error-message {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 340px;
}

/* ─── Footer ─── */
.site-footer {
    padding: 1.5rem 0;
    margin-top: 2rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-dim);
    border-top: 1px solid var(--border-soft);
}

/* ─── Submit button loading state ─── */
.btn-primary.loading { opacity: 0.7; pointer-events: none; }

/* ─── Responsive ─── */
@media (max-width: 560px) {
    .main-card { padding: 1.5rem 1.25rem; }
    .options-row { grid-template-columns: 1fr; }
    .result-link-row { flex-direction: column; }
    .btn-copy { width: 100%; justify-content: center; }
}