/* ==========================================
   STYLES FUTURISTES - SONOSPHÈRE ÉLECTRONIQUE
   Interface Cyberpunk Windows 95 Compatible
   ========================================== */

/* STYLES DE BASE */
body {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    color: #00ffff;
    font-family: 'Courier New', 'Lucida Console', monospace;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background-attachment: fixed;
}

/* LAYOUT PRINCIPAL */
.container {
    display: flex;
    min-height: 100vh;
}

#sidebar {
    width: 280px;
    background: linear-gradient(180deg, #1e1e2e 0%, #2a2a3a 100%);
    border-right: 3px solid #00ffff;
    border-top: 1px solid #ffffff33;
    border-bottom: 1px solid #00000033;
    padding: 20px;
    box-shadow: 
        inset -1px 0 0 #ffffff22,
        3px 0 10px #00ffff22,
        0 0 20px #00ffff11;
    position: relative;
}

#sidebar::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00ffff, transparent);
}

#content {
    flex-grow: 1;
    padding: 30px;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
    position: relative;
    overflow: hidden;
}

#content::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, #00ffff08 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, #ffffff08 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* NAVIGATION */
#sidebar h2 {
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
    padding: 10px 0;
    border-bottom: 2px solid #00ffff;
    text-shadow: 0 0 10px #00ffff77;
    font-size: 14px;
}

a {
    color: #c0c0c0;
    text-decoration: none;
    display: block;
    padding: 8px 12px;
    margin: 2px 0;
    background: linear-gradient(90deg, #2a2a3a, #323242);
    border: 1px solid #404050;
    border-radius: 0;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 
        inset 1px 1px 0 #ffffff11,
        inset -1px -1px 0 #00000033;
}

a:hover {
    color: #00ffff;
    background: linear-gradient(90deg, #323242, #3a3a4a);
    border-color: #00ffff;
    text-shadow: 0 0 8px #00ffff;
    box-shadow: 
        inset 1px 1px 0 #ffffff22,
        inset -1px -1px 0 #00000044,
        0 0 15px #00ffff33;
}

a:hover::before {
    content: "▶";
    position: absolute;
    left: -15px;
    color: #00ffff;
    animation: blink 1s infinite;
}

.submenu {
    margin-left: 15px;
    border-left: 2px solid #404050;
    padding-left: 10px;
}

.submenu a {
    background: linear-gradient(90deg, #1a1a2a, #252535);
    border-color: #353545;
    font-size: 10px;
}

/* DROPDOWN MENUS */
.dropdown {
    cursor: pointer;
}

.dropdown-content {
    display: none;
    margin-top: 5px;
}

.dropdown:hover .dropdown-content {
    display: block;
    animation: slideDown 0.3s ease;
}

/* TITRES */
h1 {
    color: #ffffff;
    font-size: 28px;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 30px;
    text-align: center;
    text-shadow: 
        0 0 20px #00ffff,
        0 0 40px #00ffff77,
        2px 2px 0 #000000;
    border-bottom: 3px solid #00ffff;
    padding-bottom: 15px;
    background: linear-gradient(90deg, transparent, #00ffff22, transparent);
}

h2 {
    color: #00ffff;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-left: 4px solid #00ffff;
    padding-left: 15px;
    margin: 30px 0 20px 0;
}

h3 {
    color: #c0c0c0;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 14px;
    margin: 25px 0 15px 0;
    border-bottom: 1px solid #404050;
    padding-bottom: 5px;
}

/* PARAGRAPHES */
p {
    line-height: 1.6;
    margin: 15px 0;
    color: #b0b0b0;
    text-align: justify;
    background: linear-gradient(90deg, #ffffff08, transparent);
    padding: 12px 15px;
    border-left: 2px solid #404050;
    box-shadow: inset 1px 1px 0 #ffffff05;
}

/* IMAGES ET MÉDIAS */
img {
    border: 3px solid #00ffff;
    box-shadow: 
        0 0 20px #00ffff44,
        inset 1px 1px 0 #ffffff33;
    filter: brightness(1.1) contrast(1.1);
    margin: 20px 0;
}

/* IFRAMES (VIDÉOS YOUTUBE) */
iframe {
    margin: 20px 0;
    border: 3px solid #c0c0c0;
    box-shadow: 
        0 0 15px #ffffff33,
        inset 1px 1px 0 #ffffff44;
}

/* ÉLÉMENTS SPÉCIAUX */
strong {
    color: #00ffff;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 0 5px #00ffff77;
}

i {
    color: #ffffff;
    font-style: italic;
}

/* MARQUEE (TEXTE DÉFILANT) */
marquee {
    color: #00ffff;
    background: linear-gradient(90deg, #000000, #1a1a2e, #000000);
    padding: 10px;
    border-top: 2px solid #00ffff;
    border-bottom: 2px solid #00ffff;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 10px #00ffff;
    margin: 30px 0;
    box-shadow: 
        0 -5px 15px #00ffff22,
        0 5px 15px #00ffff22;
}

/* CLASSES UTILITAIRES */
.mt-50 {
    margin-top: 50px;
}

.mb-50 {
    margin-bottom: 50px;
}

/* ANIMATIONS (Compatible Windows 95) */
@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

@keyframes slideDown {
    0% { opacity: 0; transform: translateY(-10px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* EFFETS DE SCAN LINES RÉTRO */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 255, 255, 0.03) 2px,
        rgba(0, 255, 255, 0.03) 4px
    );
    pointer-events: none;
    z-index: 1000;
}

/* BORDURES EN RELIEF 3D (Style Windows 95) */
.win95-border {
    border-top: 2px solid #ffffff;
    border-left: 2px solid #ffffff;
    border-right: 2px solid #808080;
    border-bottom: 2px solid #808080;
    background: #c0c0c0;
}