/* ============================================================
   ARTTISTA — Manual Style
   Dark documentation theme
   ============================================================ */

/* ------------------------------------------------------------
   1. RESET / BASE
   ------------------------------------------------------------ */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;

    background:
        radial-gradient(
            circle at 15% 0%,
            rgba(111, 66, 193, 0.12),
            transparent 35%
        ),
        radial-gradient(
            circle at 85% 20%,
            rgba(0, 190, 255, 0.07),
            transparent 30%
        ),
        #0d0f14;

    color: #d7dae2;

    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif;

    font-size: 16px;
    line-height: 1.75;

    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}


/* ------------------------------------------------------------
   2. MAIN DOCUMENT
   ------------------------------------------------------------ */

/* ------------------------------------------------------------
   MAIN CONTENT WIDTH
   ------------------------------------------------------------ */

body {
    max-width: 920px;

    margin-left: auto;
    margin-right: auto;

    padding-left: 28px;
    padding-right: 28px;
}

/* ------------------------------------------------------------
   3. TYPOGRAPHY
   ------------------------------------------------------------ */

p {
    margin: 0 0 1.25rem;
}

strong {
    color: #ffffff;
    font-weight: 650;
}

em {
    color: #e0e3ea;
}

a {
    color: #7cc7ff;
    text-decoration: none;
    transition:
        color 0.2s ease,
        border-color 0.2s ease;
}

a:hover {
    color: #b5e2ff;
    text-decoration: underline;
}


/* ------------------------------------------------------------
   4. HEADINGS
   ------------------------------------------------------------ */

h1,
h2,
h3,
h4,
h5,
h6 {
    color: #f5f7fb;

    font-weight: 700;
    line-height: 1.25;

    letter-spacing: -0.025em;

    scroll-margin-top: 30px;
}

h1 {
    margin-top: 4rem;
    margin-bottom: 2rem;

    padding-bottom: 1.2rem;

    font-size: 2.7rem;

    border-bottom: 1px solid #292d38;

    background:
        linear-gradient(
            90deg,
            #ffffff,
            #b9c8ff
        );

    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    margin-top: 3.5rem;
    margin-bottom: 1.3rem;

    font-size: 2rem;

    position: relative;
}

h2::before {
    content: "";

    display: inline-block;

    width: 5px;
    height: 1.2em;

    margin-right: 12px;

    vertical-align: -0.18em;

    border-radius: 5px;

    background: linear-gradient(
        180deg,
        #8b6cff,
        #43c6ff
    );
}

h3 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;

    font-size: 1.45rem;

    color: #e8ebf2;
}

h4 {
    margin-top: 2rem;
    margin-bottom: 0.8rem;

    font-size: 1.15rem;

    color: #cfd4df;
}

h5,
h6 {
    font-size: 1rem;
}


/* ------------------------------------------------------------
   5. FIRST TITLE
   ------------------------------------------------------------ */

body > h1:first-child {
    margin-top: 5rem;

    font-size: 3.3rem;

    border-bottom: none;

    padding-bottom: 0.5rem;
}


/* ------------------------------------------------------------
   6. TABLE OF CONTENTS
   ------------------------------------------------------------ */

#TOC {
    max-width: 920px;

    margin-top: 2rem;
    margin-bottom: 4rem;

    padding: 1.5rem 1.8rem;

    background: rgba(22, 25, 33, 0.9);

    border: 1px solid #292e39;

    border-radius: 14px;

    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.025);
}

#TOC::before {
    content: "CONTENTS";

    display: block;

    margin-bottom: 1rem;

    color: #8992a5;

    font-size: 0.72rem;
    font-weight: 800;

    letter-spacing: 0.15em;
}

#TOC ul {
    list-style: none;

    margin: 0;
    padding-left: 0.8rem;
}

#TOC ul ul {
    padding-left: 1.2rem;
}

#TOC li {
    margin: 0.2rem 0;
}

#TOC a {
    display: inline-block;

    padding: 0.25rem 0;

    color: #aeb6c7;

    font-size: 0.94rem;

    text-decoration: none;
}

#TOC a:hover {
    color: #8fd5ff;
}


/* ------------------------------------------------------------
   7. LISTS
   ------------------------------------------------------------ */

ul,
ol {
    margin-top: 0.5rem;
    margin-bottom: 1.4rem;

    padding-left: 1.8rem;
}

li {
    margin-bottom: 0.35rem;
}

li::marker {
    color: #7f8cff;
}


/* ------------------------------------------------------------
   8. INLINE CODE
   ------------------------------------------------------------ */

code {
    padding: 0.18em 0.45em;

    border-radius: 5px;

    background: #191d26;

    border: 1px solid #2b303c;

    color: #a9dcff;

    font-family:
        "SFMono-Regular",
        Consolas,
        "Liberation Mono",
        Menlo,
        monospace;

    font-size: 0.88em;
}


/* ------------------------------------------------------------
   9. CODE BLOCKS
   ------------------------------------------------------------ */

pre {
    max-width: 920px;

    margin-top: 1.5rem;
    margin-bottom: 1.8rem;

    padding: 1.25rem 1.4rem;

    overflow-x: auto;

    background: #11141a;

    border: 1px solid #292e38;

    border-radius: 12px;

    box-shadow:
        0 15px 40px rgba(0, 0, 0, 0.25);
}

pre code {
    padding: 0;

    background: transparent;

    border: none;

    color: #dce2ec;

    font-size: 0.88rem;

    line-height: 1.65;
}


/* ------------------------------------------------------------
   10. BLOCKQUOTES
   ------------------------------------------------------------ */

blockquote {
    max-width: 920px;

    margin-top: 1.5rem;
    margin-bottom: 1.8rem;

    padding: 1rem 1.4rem;

    background: #171a22;

    border-left: 4px solid #7165ff;

    border-radius: 0 10px 10px 0;

    color: #bfc6d4;
}

blockquote p:last-child {
    margin-bottom: 0;
}


/* ------------------------------------------------------------
   11. TABLES
   ------------------------------------------------------------ */

table {
    width: 100%;

    margin-top: 1.5rem;
    margin-bottom: 2rem;

    border-collapse: separate;
    border-spacing: 0;

    overflow: hidden;

    background: #15181f;

    border: 1px solid #292e38;

    border-radius: 10px;
}

thead {
    background: #1d212b;
}

th {
    padding: 0.85rem 1rem;

    color: #f0f3f8;

    font-size: 0.82rem;
    font-weight: 700;

    text-align: left;

    letter-spacing: 0.02em;

    border-bottom: 1px solid #303541;
}

td {
    padding: 0.8rem 1rem;

    color: #c6ccd7;

    border-bottom: 1px solid #252a34;
}

tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background 0.15s ease;
}

tbody tr:hover {
    background: rgba(255, 255, 255, 0.025);
}


/* ------------------------------------------------------------
   12. HORIZONTAL RULE
   ------------------------------------------------------------ */

hr {
    max-width: 920px;

    margin-top: 3rem;
    margin-bottom: 3rem;

    border: none;

    border-top: 1px solid #292e38;
}


/* ------------------------------------------------------------
   13. IMAGES
   ------------------------------------------------------------ */

figure {
    margin-top: 2rem;
    margin-bottom: 2rem;

    text-align: center;
}

img {
    display: block;

    max-width: 100%;
    height: auto;

    margin-left: auto;
    margin-right: auto;

    border-radius: 10px;

    border: 1px solid #303541;

    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.35);
}

figcaption {
    margin-top: 0.7rem;

    color: #858d9e;

    font-size: 0.85rem;

    font-style: italic;
}


/* ------------------------------------------------------------
   14. KEYBOARD SHORTCUTS
   ------------------------------------------------------------ */

kbd {
    display: inline-block;

    min-width: 1.7em;

    padding: 0.15em 0.45em;

    margin: 0 0.08em;

    text-align: center;

    color: #e9edf5;

    background:
        linear-gradient(
            180deg,
            #292e39,
            #1c2028
        );

    border: 1px solid #3a404d;

    border-bottom-width: 2px;

    border-radius: 5px;

    box-shadow:
        0 1px 0 #0a0c10;

    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    font-size: 0.82em;
}


/* ------------------------------------------------------------
   15. DEFINITION / DESCRIPTION LISTS
   ------------------------------------------------------------ */

dl {
    margin-top: 1.5rem;
    margin-bottom: 1.8rem;
}

dt {
    margin-top: 1rem;

    color: #f0f2f7;

    font-weight: 700;
}

dd {
    margin-left: 1.5rem;

    color: #aeb5c2;
}


/* ------------------------------------------------------------
   16. SPECIAL CALLOUTS
   ------------------------------------------------------------ */

/*
   Use these classes in Markdown via raw HTML:

   <div class="note">
   ...
   </div>

   <div class="tip">
   ...
   </div>

   <div class="warning">
   ...
   </div>

   <div class="danger">
   ...
   </div>
*/

.note,
.tip,
.warning,
.danger {
    max-width: 920px;

    margin: 1.7rem auto;

    padding: 1rem 1.3rem;

    border-radius: 10px;

    border: 1px solid;

    background: #171a21;
}

.note::before,
.tip::before,
.warning::before,
.danger::before {
    display: block;

    margin-bottom: 0.35rem;

    font-size: 0.72rem;
    font-weight: 800;

    letter-spacing: 0.12em;
}

.note {
    border-color: #334c69;
}

.note::before {
    content: "NOTE";

    color: #78b8f0;
}

.tip {
    border-color: #36544a;
}

.tip::before {
    content: "TIP";

    color: #79d3a9;
}

.warning {
    border-color: #66502f;
}

.warning::before {
    content: "WARNING";

    color: #e8b96b;
}

.danger {
    border-color: #673d45;
}

.danger::before {
    content: "CAUTION";

    color: #ed8f9d;
}


/* ------------------------------------------------------------
   17. ARTTISTA FEATURE CARDS
   ------------------------------------------------------------ */

.feature {
    display: grid;

    grid-template-columns: repeat(
        auto-fit,
        minmax(220px, 1fr)
    );

    gap: 1rem;

    margin: 2rem 0;
}

.feature-card {
    padding: 1.3rem;

    background:
        linear-gradient(
            145deg,
            #1a1e27,
            #14171e
        );

    border: 1px solid #2c313d;

    border-radius: 12px;

    transition:
        transform 0.2s ease,
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-2px);

    border-color: #454c5c;

    box-shadow:
        0 15px 35px rgba(0, 0, 0, 0.25);
}

.feature-card h3 {
    margin-top: 0;

    margin-bottom: 0.5rem;

    font-size: 1.1rem;
}

.feature-card p {
    margin-bottom: 0;

    color: #aab1bf;

    font-size: 0.92rem;
}


/* ------------------------------------------------------------
   18. BUTTON-LIKE ELEMENTS
   ------------------------------------------------------------ */

.button {
    display: inline-block;

    padding: 0.55rem 1rem;

    background:
        linear-gradient(
            135deg,
            #6658e8,
            #4777d9
        );

    border-radius: 7px;

    color: white;

    font-weight: 600;

    text-decoration: none;

    box-shadow:
        0 5px 18px rgba(70, 90, 180, 0.25);
}

.button:hover {
    color: white;

    text-decoration: none;

    filter: brightness(1.12);
}


/* ------------------------------------------------------------
   19. ICON / TOOL LABELS
   ------------------------------------------------------------ */

.tool {
    display: inline-flex;

    align-items: center;

    padding: 0.2rem 0.55rem;

    margin: 0 0.15rem;

    background: #1b1f28;

    border: 1px solid #303641;

    border-radius: 6px;

    color: #cbd3df;

    font-size: 0.86rem;
}


/* ------------------------------------------------------------
   20. FOOTER
   ------------------------------------------------------------ */

body::after {
    content:
        "Arttista — Vector Drawing & 2D Animation";

    display: block;

    max-width: 920px;

    margin: 5rem auto 2rem;

    padding-top: 1.5rem;

    border-top: 1px solid #292e38;

    color: #626a79;

    font-size: 0.8rem;

    text-align: center;
}


/* ------------------------------------------------------------
   21. SELECTION
   ------------------------------------------------------------ */

::selection {
    background: rgba(113, 101, 255, 0.35);

    color: #ffffff;
}


/* ------------------------------------------------------------
   22. SCROLLBAR
   ------------------------------------------------------------ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #0d0f14;
}

::-webkit-scrollbar-thumb {
    background: #303541;

    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #454c5b;
}


/* ------------------------------------------------------------
   23. RESPONSIVE
   ------------------------------------------------------------ */

@media (max-width: 960px) {

    body {
        padding-left: 1.2rem;
        padding-right: 1.2rem;
    }

    body > div#TOC,
    body > h1,
    body > h2,
    body > h3,
    body > h4,
    body > h5,
    body > h6,
    body > p,
    body > ul,
    body > ol,
    body > table,
    body > pre,
    body > blockquote,
    body > dl,
    body > figure,
    body > hr {
        max-width: 100%;
    }

    h1 {
        font-size: 2.2rem;
    }

    h2 {
        font-size: 1.7rem;
    }

    body > h1:first-child {
        font-size: 2.6rem;
    }

    #TOC {
        padding: 1.2rem;
    }
}


/* ------------------------------------------------------------
   24. MOBILE
   ------------------------------------------------------------ */

@media (max-width: 600px) {

    body {
        font-size: 15px;

        padding-left: 0.8rem;
        padding-right: 0.8rem;
    }

    h1 {
        margin-top: 2.5rem;

        font-size: 1.9rem;
    }

    body > h1:first-child {
        font-size: 2.2rem;
    }

    h2 {
        margin-top: 2.5rem;

        font-size: 1.55rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    pre {
        padding: 1rem;

        border-radius: 8px;

        font-size: 0.82rem;
    }

    table {
        display: block;

        overflow-x: auto;

        white-space: nowrap;
    }

    th,
    td {
        padding: 0.65rem 0.75rem;
    }
}


/* ------------------------------------------------------------
   25. PRINT
   ------------------------------------------------------------ */

@media print {

    body {
        background: white;

        color: #222;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
        color: #111;

        -webkit-text-fill-color: initial;
    }

    a {
        color: #222;
    }

    pre,
    table,
    blockquote,
    .note,
    .tip,
    .warning,
    .danger {
        break-inside: avoid;
    }

    body::after {
        color: #777;
    }
}