:root {
    --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", "SFMono-Regular", monospace;
    --color-bg: #0d0f11;
    --color-surface: #16181d;
    --color-surface-alt: #1f2329;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-text: #f5f7f9;
    --color-text-muted: rgba(240, 243, 248, 0.6);
    --color-accent: #67f7ad;
    --color-accent-hover: #8fffc3;
    --color-accent-contrast: #052417;
    --color-danger: #ff6b6b;
    --shadow-soft: 0 18px 40px -24px rgba(8, 16, 24, 0.7);
    --shadow-strong: 0 26px 70px -36px rgba(5, 12, 20, 0.8);
    --radius-lg: 18px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --max-width: 1080px;
    --transition: 160ms ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(20px, 4vw, 72px);
    padding: clamp(24px, 4vw, 70px) clamp(18px, 6vw, 90px);
    line-height: 1.55;
    transition: background-color var(--transition), color var(--transition);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition), opacity var(--transition);
}

a:hover,
a:focus {
    color: var(--color-accent-hover);
}

.danger-link {
    color: var(--color-danger);
    font-weight: 600;
    margin-left: 14px;
}

.danger-link:hover,
.danger-link:focus {
    opacity: 0.82;
}

.header,
.new-form,
.content,
.paste-list,
.message,
.error {
    width: min(100%, var(--max-width));
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 12px 0;
}

.header h1 {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    margin: 0;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.header .login-btn {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid var(--color-border);
    color: inherit;
    transition: background-color var(--transition), border-color var(--transition);
}

.header .login-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header .logged-in-as {
    font-size: 0.9em;
    opacity: 0.8;
}

.header .login-btn:hover,
.header .login-btn:focus {
    border-color: var(--color-accent);
    background: rgba(255, 255, 255, 0.04);
}

.panel {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-border);
    padding: clamp(20px, 3vw, 32px);
}

.new-form,
.content,
.message,
.error {
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    padding: clamp(22px, 3.2vw, 34px);
}

.paste-list {
    display: grid;
    gap: clamp(16px, 2vw, 24px);
}

.paste-list h3 {
    margin: 0 0 12px 0;
    font-size: 1.2rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    opacity: 0.7;
}

.paste-item {
    background: var(--color-surface-alt);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    padding: 18px 20px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.paste-item:hover {
    transform: translateY(-3px);
    border-color: var(--color-accent-hover);
    box-shadow: 0 12px 30px -20px rgba(0, 0, 0, 0.65);
}

.paste-meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
}

.new-form h3,
.content h3 {
    margin-top: 0;
    font-size: 1.35rem;
    letter-spacing: -0.01em;
}

form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.form-row > * {
    flex: 1 1 180px;
}

.form-row--dual > * {
    min-width: 200px;
}

.form-options {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 20px;
    align-items: center;
}

.checkbox-inline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
}

input,
button,
select,
textarea {
    font: inherit;
    color: inherit;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-surface-alt);
    padding: 12px 14px;
    transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    padding: 0;
    border-radius: 6px;
    display: inline-block;
    background: var(--color-surface);
    accent-color: var(--color-accent);
}

input[type="checkbox"]:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(103, 247, 173, 0.35);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-muted);
}

textarea {
    min-height: 220px;
    font-family: var(--font-mono);
    resize: vertical;
}

select {
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--color-text) 50%),
        linear-gradient(135deg, var(--color-text) 50%, transparent 50%);
    background-position: calc(100% - 18px) calc(50% - 4px), calc(100% - 12px) calc(50% - 4px);
    background-size: 6px 6px;
    background-repeat: no-repeat;
    padding-right: 40px;
}

input:focus,
select:focus,
textarea:focus,
button:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

button,
.button-like {
    cursor: pointer;
    border: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 46px;
    padding: 0 24px;
    border-radius: var(--radius-sm);
    background: var(--color-accent);
    color: var(--color-accent-contrast);
    box-shadow: 0 12px 20px -18px rgba(0, 0, 0, 0.9);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition);
}

button:hover,
.button-like:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 36px -26px rgba(0, 0, 0, 0.75);
    background: var(--color-accent-hover);
}

.secondary-btn {
    border: 1px solid var(--color-border);
    background: transparent;
    color: inherit;
}

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

.message,
.error {
    text-align: center;
}

.message {
    display: grid;
    gap: 12px;
}

.message-heading {
    font-weight: 600;
}

.message-sub {
    opacity: 0.8;
}

.message input[type="text"] {
    width: 100%;
    background: var(--color-surface-alt);
}

.message .direct-link-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.message .direct-link-actions input {
    flex: 1 1 auto;
}

.direct-link-block {
    margin: 18px 0 24px;
    display: grid;
    gap: 12px;
}

.direct-link-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.direct-link-actions input {
    flex: 1 1 auto;
}

.error {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 18px;
}

.info-box {
    background: var(--color-surface-alt);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    padding: 18px;
    color: inherit;
}

.info-box code {
    font-family: var(--font-mono);
}

pre {
    background: var(--color-surface-alt);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    overflow-x: auto;
}

.login-page {
    width: min(100%, 420px);
    margin: 0 auto;
}

.login-page form {
    gap: 18px;
}

.login-page h2 {
    text-align: center;
    margin-bottom: 22px;
}

@media (max-width: 860px) {
    body {
        padding-inline: clamp(16px, 4vw, 26px);
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .header h1 {
        font-size: 1.9rem;
    }
}

@media (max-width: 560px) {
    body {
        gap: clamp(16px, 5vw, 28px);
    }

    button,
    .button-like {
        width: 100%;
    }

    .paste-meta {
        flex-direction: column;
        gap: 6px;
    }

    .direct-link-actions {
        flex-direction: column;
        align-items: stretch;
    }
}

.markdown-body {
    line-height: 1.7;
    display: grid;
    gap: 1em;
    color: inherit;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    margin: 0.6em 0 0.3em;
    font-weight: 600;
    color: inherit;
}

.markdown-body h1 { font-size: 1.9em; }
.markdown-body h2 { font-size: 1.6em; }
.markdown-body h3 { font-size: 1.3em; }

.markdown-body p {
    margin: 0;
}

.markdown-body ul,
.markdown-body ol {
    padding-left: 1.6em;
    margin: 0.2em 0 0.6em;
}

.markdown-body li {
    margin: 0.2em 0;
}

.markdown-body code {
    font-family: var(--font-mono);
    background: var(--color-surface-alt);
    border-radius: var(--radius-sm);
    padding: 0.1em 0.4em;
}

.markdown-body pre {
    background: var(--color-surface-alt);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    padding: 16px;
    overflow-x: auto;
}

.markdown-body blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: 1em;
    color: var(--color-text-muted);
    margin: 0.2em 0 0.8em;
}