/* ============================================================
   TERMINAL_OS — Main Stylesheet
   Stack : CSS3 Vanilla | Terminal CRT / Retro Aesthetic
   ============================================================ */

/* ── Google Fonts (monospace fallback si pas de réseau) ── */
@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&display=swap');

/* ── Reset & Variables ── */
:root {
    --clr-bg:         #000000;
    --clr-bg-glass:   rgba(0, 20, 0, 0.6);
    --clr-primary:    #32CD32;   /* LimeGreen */
    --clr-bright:     #00FF00;   /* Full Green */
    --clr-dim:        #1a7a1a;
    --clr-muted:      #0d4d0d;
    --clr-cursor:     #32CD32;
    --clr-error:      #FF3333;
    --clr-warn:       #FFD700;
    --clr-border:     #1f6b1f;
    --font-mono:      'Share Tech Mono', 'Courier New', 'Lucida Console', monospace;
    --scanline-size:  3px;
    --transition:     0.15s ease;
    --glow-sm:        0 0 4px var(--clr-primary);
    --glow-md:        0 0 10px var(--clr-primary), 0 0 20px rgba(50,205,50,0.3);
    --glow-lg:        0 0 16px var(--clr-bright), 0 0 40px rgba(0,255,0,0.2);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--clr-bg);
    color: var(--clr-primary);
    font-family: var(--font-mono);
    font-size: 15px;
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ── Scanlines Overlay ── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent calc(var(--scanline-size) * 1),
        rgba(0, 0, 0, 0.18) calc(var(--scanline-size) * 1),
        rgba(0, 0, 0, 0.18) calc(var(--scanline-size) * 2)
    );
    pointer-events: none;
    z-index: 9999;
    animation: scanlineShift 8s linear infinite;
}

/* CRT vignette */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: radial-gradient(
        ellipse at center,
        transparent 60%,
        rgba(0, 0, 0, 0.55) 100%
    );
    pointer-events: none;
    z-index: 9998;
}

@keyframes scanlineShift {
    0%   { background-position: 0 0; }
    100% { background-position: 0 100px; }
}

/* ── Typography ── */
h1, h2, h3, h4 {
    font-family: var(--font-mono);
    color: var(--clr-bright);
    text-shadow: var(--glow-sm);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; border-bottom: 1px solid var(--clr-border); padding-bottom: .5rem; margin-bottom: 1rem; }
h3 { font-size: 1.1rem; color: var(--clr-primary); }

p { margin-bottom: 1rem; }

a {
    color: var(--clr-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color var(--transition), border-color var(--transition), text-shadow var(--transition);
}
a:hover {
    color: var(--clr-bright);
    border-bottom-color: var(--clr-bright);
    text-shadow: var(--glow-sm);
}

code, pre {
    background: var(--clr-muted);
    color: var(--clr-bright);
    padding: .15rem .4rem;
    border-radius: 2px;
    font-family: var(--font-mono);
    font-size: .9em;
}
pre {
    padding: 1rem;
    overflow-x: auto;
    border-left: 3px solid var(--clr-primary);
    margin-bottom: 1rem;
}

/* ── Layout Wrapper ── */
#page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

main {
    flex: 1;
    padding: 2rem 0 3rem;
}

/* ── Header ── */
.site-header {
    border-bottom: 1px solid var(--clr-border);
    padding: 1rem 0;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.site-header::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--clr-dim);
}

.site-logo {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--clr-bright);
    text-shadow: var(--glow-md);
    letter-spacing: .12em;
    text-transform: uppercase;
    animation: flicker 6s infinite;
    white-space: nowrap;
}

.site-logo span {
    color: var(--clr-dim);
}

/* ── Navigation ── */
.site-nav {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
    align-items: center;
}

.site-nav a {
    display: inline-block;
    padding: .3rem .75rem;
    border: 1px solid var(--clr-border);
    color: var(--clr-primary);
    font-size: .85rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    border-radius: 2px;
    transition: background var(--transition), color var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
}

.site-nav a::before {
    content: '[';
    margin-right: .15em;
    color: var(--clr-dim);
    transition: color var(--transition);
}
.site-nav a::after {
    content: ']';
    margin-left: .15em;
    color: var(--clr-dim);
    transition: color var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
    background: var(--clr-muted);
    color: var(--clr-bright);
    border-color: var(--clr-primary);
    box-shadow: var(--glow-sm);
    text-shadow: none;
}

.site-nav a:hover::before,
.site-nav a:hover::after,
.site-nav a.active::before,
.site-nav a.active::after {
    color: var(--clr-bright);
}

/* ── Footer ── */
.site-footer {
    border-top: 1px solid var(--clr-border);
    padding: 1.25rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .5rem;
    font-size: .8rem;
    color: var(--clr-dim);
}

.site-footer .footer-status {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.footer-dot {
    width: 7px;
    height: 7px;
    background: var(--clr-bright);
    border-radius: 50%;
    display: inline-block;
    box-shadow: var(--glow-sm);
    animation: blink-dot 1.2s step-end infinite;
}

@keyframes blink-dot {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0; }
}

/* ── Hero Section ── */
.hero {
    padding: 3rem 0 2rem;
    text-align: center;
    position: relative;
}

.hero-ascii {
    font-size: clamp(.6rem, 1.3vw, .95rem);
    line-height: 1.25;
    color: var(--clr-bright);
    text-shadow: var(--glow-md);
    white-space: pre;
    display: inline-block;
    animation: flicker 8s infinite;
    margin-bottom: 2rem;
    overflow-x: auto;
    max-width: 100%;
}

.hero-boot {
    max-width: 620px;
    margin: 0 auto 1.5rem;
    text-align: left;
    background: var(--clr-bg-glass);
    border: 1px solid var(--clr-border);
    border-radius: 4px;
    padding: 1.25rem 1.5rem;
    position: relative;
    box-shadow: inset 0 0 20px rgba(0,0,0,.5), var(--glow-sm);
}

.hero-boot::before {
    content: '> BOOT_SEQUENCE';
    display: block;
    color: var(--clr-dim);
    font-size: .75rem;
    letter-spacing: .1em;
    margin-bottom: .75rem;
    border-bottom: 1px dashed var(--clr-muted);
    padding-bottom: .5rem;
}

#typewriter-output {
    color: var(--clr-primary);
    font-size: .9rem;
    min-height: 1.5em;
}

/* Curseur clignotant */
.cursor {
    display: inline-block;
    width: .55em;
    height: 1.1em;
    background: var(--clr-cursor);
    vertical-align: text-bottom;
    margin-left: 2px;
    animation: blink-cursor .75s step-end infinite;
}

@keyframes blink-cursor {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0; }
}

/* ── Terminal Blocks ── */
.terminal-block {
    background: var(--clr-bg-glass);
    border: 1px solid var(--clr-border);
    border-radius: 3px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    box-shadow: var(--glow-sm);
    transition: box-shadow var(--transition), border-color var(--transition);
}

.terminal-block:hover {
    border-color: var(--clr-primary);
    box-shadow: var(--glow-md);
}

.terminal-block .block-label {
    position: absolute;
    top: -10px;
    left: 12px;
    background: var(--clr-bg);
    padding: 0 .5rem;
    font-size: .72rem;
    color: var(--clr-dim);
    letter-spacing: .08em;
}

/* ── Double border variant ── */
.terminal-block--double {
    border: 2px double var(--clr-border);
}
.terminal-block--double:hover {
    border-color: var(--clr-primary);
}

/* ── Prompt prefix ── */
.prompt::before {
    content: '> ';
    color: var(--clr-dim);
}

/* ── Animations ── */
@keyframes flicker {
    0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
        text-shadow: var(--glow-md);
        opacity: 1;
    }
    20%, 24%, 55% {
        text-shadow: none;
        opacity: .85;
    }
}

/* ── Utility Classes ── */
.text-bright  { color: var(--clr-bright); }
.text-dim     { color: var(--clr-dim); }
.text-error   { color: var(--clr-error); }
.text-warn    { color: var(--clr-warn); }
.glow-sm      { text-shadow: var(--glow-sm); }
.glow-md      { text-shadow: var(--glow-md); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 2rem; }
.text-center { text-align: center; }

/* ── Responsive ── */
@media (max-width: 600px) {
    .site-header { flex-direction: column; align-items: flex-start; }
    .hero-ascii  { font-size: .5rem; }
    h1 { font-size: 1.5rem; }
}