:root {
    --blue-title: #7dd3fc;
    --green-title: #34d399;
    --yellow-title: #fcd34d;
    --pink-title: #f472b6;
    --purple-title: #a78bfa;
    --bg-dark: #191b22;
    --card-dark: #23243a;
    --card-shadow: 0 6px 32px #0007;
    --txt-white: #e7ecfc;
    --txt-bright: #fff;
    --txt-muted: #b3bac7;
    --code-bg: #20212c;
    --code-fg: #a5f3fc;
    --code-border: #2dd4bf;
    --button-bg: #23243a;
    --button-fg: #5eead4;
    --button-hover: #2dd4bf;
    --advice-bg: #1f2937;
    --advice-border: #34d399;
    --bonus-bg: #232043;
    --bonus-border: #f472b6;
    --tip-bg: #232d43;
    --tip-border: #fcd34d;
    --note-bg: #22283a;
    --note-border: #7dd3fc;
}

body {
    background: var(--bg-dark);
    color: var(--txt-white);
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    min-height: 100vh;
}

.slide-content {
    max-width: 1000px;
    margin: 44px auto 34px auto;
    background: var(--card-dark);
    border-radius: 22px;
    box-shadow: var(--card-shadow);
    padding: 48px 54px 38px 54px;
    box-sizing: border-box;
    overflow-x: auto;
    transition: box-shadow .2s, background .2s, border-radius .2s;
}

@media (max-width: 1200px) {
    .slide-content {
        max-width: 96vw;
        padding: 30px 4vw 22px 4vw;
    }
}

@media (max-width: 900px) {
    .slide-content {
        padding: 16px 2vw 12px 2vw;
    }
}

@media (max-width: 700px) {
    body {
        background: var(--card-dark);
    }

    .slide-content {
        background: none;
        box-shadow: none;
        border-radius: 0;
        max-width: 100vw;
        margin: 0;
        padding: 0 5vw 0 5vw;
    }

    h2, h3 {
        font-size: 1.13em;
    }
}

h2, h3, h4 {
    font-weight: 700;
    margin: 0 0 14px 0;
    letter-spacing: 0.01em;
}

h2 {
    font-size: 2em;
}

h3 {
    font-size: 1.18em;
}

h2 {
    color: var(--blue-title);
}

.slide-content h2 {
    color: var(--blue-title);
}

.slide-content h2[data-theme="green"] {
    color: var(--green-title);
}

.slide-content h2[data-theme="yellow"] {
    color: var(--yellow-title);
}

.slide-content h2[data-theme="pink"] {
    color: var(--pink-title);
}

.slide-content h2[data-theme="purple"] {
    color: var(--purple-title);
}

.slide-astuce {
    background: var(--advice-bg);
    border-left: 6px solid var(--advice-border);
    color: var(--txt-white);
    border-radius: 11px;
    margin: 32px 0 14px 0;
    padding: 18px 24px 15px 62px;
    position: relative;
    font-size: 1.07em;
    box-shadow: 0 2px 16px #34d3991c;
}

.slide-astuce::before {
    content: "💡";
    position: absolute;
    left: 20px;
    top: 19px;
    font-size: 1.45em;
}

.slide-bonus {
    background: var(--bonus-bg);
    border-left: 6px solid var(--bonus-border);
    color: #f9e2f7;
    border-radius: 11px;
    margin: 32px 0 14px 0;
    padding: 18px 24px 15px 62px;
    position: relative;
    font-size: 1.07em;
    box-shadow: 0 2px 16px #f472b61c;
}

.slide-bonus::before {
    content: "🎁";
    position: absolute;
    left: 20px;
    top: 19px;
    font-size: 1.45em;
}

.slide-savais-tu {
    background: var(--note-bg);
    border-left: 6px solid var(--note-border);
    color: var(--txt-bright);
    border-radius: 11px;
    margin: 32px 0 14px 0;
    padding: 18px 24px 15px 62px;
    position: relative;
    font-size: 1.07em;
    box-shadow: 0 2px 16px #7dd3fc1a;
}

.slide-savais-tu::before {
    content: "🤔";
    position: absolute;
    left: 20px;
    top: 19px;
    font-size: 1.45em;
}

.slide-conseil {
    background: var(--tip-bg);
    border-left: 6px solid var(--tip-border);
    color: #fffbe4;
    border-radius: 11px;
    margin: 32px 0 14px 0;
    padding: 18px 24px 15px 62px;
    position: relative;
    font-size: 1.07em;
    box-shadow: 0 2px 16px #fcd34d16;
}

.slide-conseil::before {
    content: "✅";
    position: absolute;
    left: 20px;
    top: 19px;
    font-size: 1.45em;
}

.code-block {
    position: relative;
    background: var(--code-bg);
    border-radius: 9px;
    margin: 18px 0 22px 0;
    padding: 19px 18px 17px 18px;
    font-family: 'Fira Mono', 'Consolas', monospace;
    font-size: 1.12em;
    overflow-x: auto;
    color: var(--code-fg);
    border: 1px solid var(--code-border);
}

.code-block code {
    background: none !important;
    color: var(--code-fg);
    font-size: 1.09em;
    padding: 0;
}

.copy-btn {
    position: absolute;
    top: 13px;
    right: 16px;
    border: none;
    background: transparent;
    color: #4dd6b6;
    font-size: 1.20em;
    cursor: pointer;
    opacity: 0.54;
    transition: opacity .15s, color .2s;
    z-index: 2;
}

.copy-btn:hover, .copy-btn:focus {
    opacity: 1;
    color: #34d399;
}

.ascii-diag {
    font-family: monospace;
    background: var(--code-bg);
    color: #ffe066;
    font-size: 1.09em;
    border-radius: 8px;
    padding: 8px 12px;
    overflow-x: auto;
    max-width: 100vw;
    margin-bottom: 14px;
    border: 1px solid #44496e;
}

.ascii-diag pre {
    margin: 0;
    background: none;
    color: #ffe066;
    font-size: 1.08em;
    font-family: inherit;
    line-height: 1.35em;
    overflow-x: auto;
}

nav {
    display: flex;
    justify-content: space-between;
    gap: 1.6em;
    margin-top: 36px;
}

button, .copy-btn {
    font-size: 1.09em;
   /* padding: 15px 28px;*/
    border-radius: 12px;
    border: none;
    background: var(--button-bg);
    color: var(--button-fg);
    font-weight: 600;
    margin: 0;
    box-shadow: 0 1px 5px #0003;
    transition: background .17s, color .16s;
    cursor: pointer;
}

nav button,
button.next-slide, button.prev-slide {
    background: linear-gradient(90deg, #34d399 0%, #7dd3fc 100%);
    color: #181926;
    font-weight: 700;
    border: none;
    outline: none;
    box-shadow: 0 2px 14px #34d39955;
    border-radius: 18px;
    font-size: 1.21em;
    padding: 18px 46px;
    margin: 18px 0;
    transition: background .2s, color .2s, box-shadow .2s;
    letter-spacing: 0.04em;
}

nav button:hover,
button.next-slide:hover, button.prev-slide:hover {
    background: linear-gradient(90deg, #fcd34d 0%, #f472b6 100%);
    color: #1c1917;
    box-shadow: 0 4px 32px #fcd34d44;
}

@media (max-width: 700px) {
    nav button {
        font-size: 1.08em;
        padding: 22px 0;
        width: 100%;
        margin: 14px 0 0 0;
        border-radius: 14px;
    }
}

details summary {
    cursor: pointer;
    font-size: 1.07em;
    color: #5eead4;
    margin-bottom: 8px;
}

details[open] summary {
    color: #fcd34d;
}

#toast-message {
    background: linear-gradient(90deg, #fcd34d 20%, #7dd3fc 100%);
    color: #181926;
    font-weight: 800;
    text-shadow: 0 2px 8px #fff4;
    border-radius: 21px;
    padding: 22px 48px;
    font-size: 1.26em;
    box-shadow: 0 4px 48px #fcd34d99, 0 1.5px 8px #222c;
    border: 3px solid #34d399;
    opacity: 0;
    position: fixed;
    left: 50%;
    bottom: 48px;
    transform: translateX(-50%) scale(0.97);
    z-index: 99999;
    transition: opacity .22s, transform .18s;
    pointer-events: none;
}

#toast-message.visible {
    opacity: 1;
    transform: translateX(-50%) scale(1.06);
}