/**
 * MTG Collection Manager - Navigation Styles
 * Header navigation and mobile menu
 */

/* ============================================================
   NAVIGATION
   ============================================================ */

.nav {
    background: linear-gradient(180deg, rgba(26, 26, 26, 0.98) 0%, rgba(13, 13, 13, 0.95) 100%);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-gold);
    text-decoration: none;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-logo:hover {
    color: var(--color-gold-dark);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: 0.5px;
    transition: color var(--transition-normal);
    position: relative;
    display: flex;
    align-items: center;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-gold);
    transition: width var(--transition-normal);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover {
    color: var(--color-gold);
}

/* Nav link icons */
.nav-link-icon {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    fill: none;
    vertical-align: middle;
    margin-right: 0.4rem;
}

/* ============================================================
   MOBILE HAMBURGER MENU
   ============================================================ */

.nav-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 110;
}

.nav-hamburger svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-text);
    transition: stroke var(--transition-fast);
}

.nav-hamburger:hover svg {
    stroke: var(--color-gold);
}

.nav-hamburger .hamburger-close {
    display: none;
}

.nav-hamburger.active .hamburger-open {
    display: none;
}

.nav-hamburger.active .hamburger-close {
    display: block;
}

/* Mobile navigation overlay */
.nav-mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.nav-mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ============================================================
   MOBILE RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
    .nav {
        padding: 0.75rem 1rem;
    }

    .nav-hamburger {
        display: block;
    }

    .nav-mobile-overlay {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -280px;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-card);
        flex-direction: column;
        padding: 5rem 1.5rem 2rem;
        gap: 0;
        z-index: var(--z-sticky);
        transition: right var(--transition-normal);
        border-left: 1px solid var(--color-border);
        overflow-y: auto;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links a {
        display: flex;
        align-items: center;
        padding: 1rem 0.5rem;
        font-size: 1.1rem;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-links a.active {
        color: var(--color-gold);
        background: rgba(212, 175, 55, 0.1);
        margin: 0 -0.5rem;
        padding: 1rem;
        border-radius: var(--radius-sm);
    }

    .nav-tasks-indicator {
        justify-content: flex-start;
        padding: 1rem 0.5rem;
    }

    .nav-tasks-indicator svg {
        margin-right: 0.5rem;
    }

    .nav-logo {
        font-size: 1.2rem;
    }
}

/* ============================================================
   TASK INDICATOR IN NAV
   ============================================================ */

.nav-tasks-indicator {
    position: relative;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background var(--transition-fast);
}

.nav-tasks-indicator:hover {
    background: rgba(212, 175, 55, 0.1);
}

.nav-tasks-indicator svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-text-muted);
    transition: stroke var(--transition-fast);
}

.nav-tasks-indicator:hover svg,
.nav-tasks-indicator.has-active svg {
    stroke: var(--color-gold);
}

.nav-tasks-indicator.has-active svg {
    animation: pulse 2s ease-in-out infinite;
}

.nav-tasks-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--color-gold);
    color: var(--color-bg-dark);
    font-size: 0.7rem;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    display: none;
}

.nav-tasks-indicator.has-active .nav-tasks-badge {
    display: flex;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}