:root {
    --bg-color: #f3f3f3;
    --card-bg: #ffffff;
    --text-color: #1c1c1c;
    --text-muted: #5d5d5d;
    --accent-color: #0078d4;
    --accent-hover: #005a9e;
    --border-color: #e5e5e5;
    --header-bg: rgba(243, 243, 243, 0.85);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #202020;
        --card-bg: #2b2b2b;
        --text-color: #ffffff;
        --text-muted: #adadad;
        --border-color: #383838;
        --header-bg: rgba(32, 32, 32, 0.85);
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.a-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 1.5rem;
}

.brand-logo img {
    display: block;
    height: 32px;
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.nav-link:hover {
    background-color: rgba(127, 127, 127, 0.1);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lang-btn {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.btn-login {
    background-color: var(--accent-color);
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.4rem 1rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.btn-login:hover {
    background-color: var(--accent-hover);
}

/* Structura Conținutului */
.main-content {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

/* Eroare 404 / Carduri */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.download-box {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: rgba(0, 120, 212, 0.05);
    border-left: 4px solid var(--accent-color);
    border-radius: 4px;
}

.btn-download {
    display: inline-block;
    background: var(--accent-color);
    color: #fff;
    padding: 0.6rem 1.4rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    margin-top: 1rem;
}

/* Subsol */
.microsoft-footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem; /* Asta oferă spațiul de siguranță pe margini! */
}