:root {
    --bg-color: #111014;
    --surface-color: #1c1b22;
    --panel-header-color: #16151a;
    --primary-text-color: #e0e0e0;
    --secondary-text-color: #8f8f9a;
    --accent-color: #7d00f5;
    --accent-color-hover: #962cff;
    --border-color: #2a2931;
    --success-color: #28a745;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--primary-text-color);
    line-height: 1.6;
    font-size: 16px;
}

/* ============== */
/* HEADER & NAV   */
/* ============== */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-text-color);
    text-decoration: none;
    letter-spacing: -1px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2.5rem;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--secondary-text-color);
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
    padding-bottom: 8px; /* Platz für den aktiven Indikator */
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-text-color);
}

/* Unterstrich für den aktiven Link */
.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent-color);
}

.hamburger-menu {
    display: none; /* Auf dem Desktop ausblenden */
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1000;
}

.hamburger-menu .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--primary-text-color);
    transition: all 0.3s ease-in-out;
}

.page-title {
    text-align: center;
    margin-bottom: 3rem;
}

.page-title h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, var(--accent-color-hover), var(--primary-text-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-title p {
    color: var(--secondary-text-color);
    font-size: 1.1rem;
}

.container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 0 2rem; /* Padding links/rechts statt auf Body */
}

.converter-layout {
    display: grid;
    grid-template-columns: 1fr 220px 1fr;
    gap: 2rem;
    align-items: stretch;
}

.panel {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background-color: var(--panel-header-color);
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    font-size: 1rem;
    color: var(--secondary-text-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

textarea {
    flex-grow: 1;
    background-color: transparent;
    border: none;
    padding: 1.5rem;
    color: var(--primary-text-color);
    font-family: 'Fira Code', monospace;
    font-size: 0.95em;
    resize: none;
    min-height: 70vh;
    outline: none;
}

.panel-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

#convert-btn {
    background-color: var(--accent-color);
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    width: 100%; 
}

#convert-btn:hover {
    background-color: var(--accent-color-hover);
}

#convert-btn:active {
    transform: scale(0.98);
}

.info-box {
    background-color: rgba(28, 27, 34, 0.8);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.9em;
    color: var(--secondary-text-color);
    text-align: center;
}

#copy-btn {
    background: var(--border-color);
    color: var(--primary-text-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.2s ease;
}

#copy-btn:hover {
    background: #3c3a47;
}

#copy-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

#copy-btn.copied {
    background-color: var(--success-color);
}

footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--secondary-text-color);
    font-size: 0.9em;
}

/* RESPONSIVE ANPASSUNGEN */

@media (max-width: 1200px) {
    .converter-layout {
        grid-template-columns: 1fr;
    }
    .panel-actions {
        padding: 2rem 0;
        order: 2;
    }
    .panel-input {
        order: 1;
    }
    .panel-output {
        order: 3;
    }
    textarea {
        min-height: 45vh;
    }
}

/* Responsiver Header (Tablet & Mobile) */
@media (max-width: 768px) {
    .main-nav {
        position: absolute;
        top: 100px; /* Höhe des Headers */
        left: 0;
        width: 100%;
        background-color: var(--surface-color);
        border-bottom: 1px solid var(--border-color);
        /* Standardmäßig ausblenden */
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-in-out;
    }

    .main-nav.active {
        max-height: 300px; /* Genug Höhe für die Links */
    }

    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 0;
        padding: 0.5rem 0;
    }

    .nav-links li {
       width: 100%;
       text-align: center;
    }
    
    .nav-links a {
        display: block;
        padding: 1rem 0;
        width: 100%;
        border-radius: 0;
    }

    .nav-links a::after {
        display: none; /* Unterstrich im mobilen Menü entfernen */
    }

    .hamburger-menu {
        display: block; /* Hamburger-Icon anzeigen */
    }
    
    /* Animation für Hamburger-Icon */
    .hamburger-menu.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .hamburger-menu.active .bar:nth-child(2) {
        opacity: 0;
    }
    .hamburger-menu.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .site-header {
      position: relative;
    }
}