/* ══════════════════════════════════════════════════
   SIDEBAR — Hell-PvP dark fantasy side navigation
   ══════════════════════════════════════════════════ */

/* ══ SIDEBAR ══ */
.side-nav {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3.75rem;
    z-index: 9990;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, rgba(12,8,6,0.97) 0%, rgba(8,5,3,0.98) 100%);
    border-right: 0.0625rem solid #2a1810;
    transition: width 0.4s cubic-bezier(0.23,1,0.32,1);
    overflow: hidden;
}

.side-nav:hover {
    width: 14rem;
    transition-delay: 0.15s;
}

/* right border glow */
.side-nav::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 0.0625rem;
    background: linear-gradient(180deg, rgba(255,90,31,0.15), rgba(255,90,31,0.03) 30%, rgba(255,90,31,0.03) 70%, rgba(255,90,31,0.15));
    z-index: 2;
    pointer-events: none;
}

/* traveling ember */
.side-nav::before {
    content: '';
    position: absolute;
    right: -0.125rem;
    top: 0;
    width: 0.3125rem;
    height: 2rem;
    background: radial-gradient(ellipse, rgba(255,90,31,0.6), rgba(255,60,10,0.2), transparent);
    border-radius: 50%;
    z-index: 3;
    pointer-events: none;
    filter: blur(0.125rem);
    animation: emberTravel 6s ease-in-out infinite;
}

@keyframes emberTravel {
    0% { top: 5%; opacity: 0; }
    10% { opacity: 0.8; }
    90% { opacity: 0.8; }
    100% { top: 90%; opacity: 0; }
}

/* ── LOGO ── */
.sn-logo {
    display: flex;
    align-items: center;
    gap: 1.1rem;
    padding: 1.125rem 0.875rem;
    border-bottom: 0.0625rem solid rgba(42,24,16,0.5);
    flex-shrink: 0;
    min-height: 3.75rem;
    overflow: hidden;
}

.sn-logo-icon {
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sn-logo-icon img {
    width: 2rem;
    height: 2rem;
    object-fit: contain;
}

.sn-logo-icon svg {
    width: 1.625rem;
    height: 1.625rem;
    fill: #ff5a1f;
    filter: drop-shadow(0 0 0.375rem rgba(255,90,31,0.3));
    animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { filter: drop-shadow(0 0 0.375rem rgba(255,90,31,0.3)); }
    50% { filter: drop-shadow(0 0 0.75rem rgba(255,90,31,0.6)) drop-shadow(0 0 1.25rem rgba(255,60,10,0.2)); }
}

.sn-logo-text {
    display: flex;
    flex-direction: column;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-0.5rem);
    transition: opacity 0.3s ease 0.1s, transform 0.3s ease 0.1s;
}

.side-nav:hover .sn-logo-text {
    opacity: 1;
    transform: translateX(0);
}

.sn-logo-name {
    font-family: 'Cinzel', serif;
    font-weight: 900;
    font-size: 0.8125rem;
    color: #f0e6da;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.sn-logo-sub {
    font-family: 'Crimson Pro', serif;
    font-size: 0.5625rem;
    color: #5a4030;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-top: 0.0625rem;
}

/* ── NAV ITEMS ── */
.sn-items {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0.5rem 0;
    gap: 0.125rem;
    overflow-y: auto;
    overflow-x: hidden;
}

.sn-items::-webkit-scrollbar { width: 0; }

.sn-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem;
    min-height: 3.25rem;
    text-decoration: none;
    position: relative;
    cursor: pointer;
    transition: background 0.3s ease;
    overflow: hidden;
}

.sn-item:hover {
    background: rgba(255,90,31,0.04);
}

/* hover shimmer sweep */
.sn-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,90,31,0.03), rgba(255,120,40,0.05), rgba(255,90,31,0.03), transparent);
    transition: left 0.5s ease;
    pointer-events: none;
}

.sn-item:hover::after {
    left: 100%;
}

/* left accent bar */
.sn-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    bottom: 20%;
    width: 0.125rem;
    background: #ff5a1f;
    border-radius: 0 0.125rem 0.125rem 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sn-item:hover::before,
.sn-item.active::before {
    opacity: 1;
}

.sn-item.active {
    background: rgba(255,90,31,0.06);
}

.sn-item.active::before {
    width: 0.1875rem;
    box-shadow: 0 0 0.375rem rgba(255,90,31,0.4);
    animation: activeBar 2s ease-in-out infinite;
}

@keyframes activeBar {
    0%, 100% { box-shadow: 0 0 0.375rem rgba(255,90,31,0.4); }
    50% { box-shadow: 0 0 0.625rem rgba(255,90,31,0.7), 0 0 1rem rgba(255,60,10,0.2); }
}

/* icon */
.sn-icon {
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.sn-icon svg,
.sn-icon img {
    width: 2rem;
    fill: #5a4030;
    opacity: 0.45;
    transition: fill 0.3s ease, filter 0.3s ease, opacity 0.3s ease, transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}

.sn-item:hover .sn-icon svg,
.sn-item:hover .sn-icon img {
    fill: #c47830;
    opacity: 0.8;
    transform: scale(1.15);
}

.sn-item.active .sn-icon svg,
.sn-item.active .sn-icon img {
    fill: #ff5a1f;
    opacity: 1;
    filter: drop-shadow(0 0 0.375rem rgba(255,90,31,0.3));
    animation: activeIconGlow 2s ease-in-out infinite;
}

@keyframes activeIconGlow {
    0%, 100% { filter: drop-shadow(0 0 0.375rem rgba(255,90,31,0.3)); }
    50% { filter: drop-shadow(0 0 0.625rem rgba(255,90,31,0.5)) drop-shadow(0 0 1rem rgba(255,60,10,0.15)); }
}

/* hover ripple on icon */
.sn-icon::before {
    content: '';
    position: absolute;
    inset: -0.25rem;
    border-radius: 50%;
    border: 0.0625rem solid rgba(255,90,31,0);
    transition: all 0.4s ease;
    pointer-events: none;
}

.sn-item:hover .sn-icon::before {
    border-color: rgba(255,90,31,0.15);
    inset: -0.5rem;
}

/* active icon glow ring */
.sn-item.active .sn-icon::after {
    content: '';
    position: absolute;
    inset: -0.1875rem;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,90,31,0.1), transparent 70%);
    pointer-events: none;
    animation: glowRing 2.5s ease-in-out infinite;
}

@keyframes glowRing {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.3); opacity: 0; }
}

/* label */
.sn-label {
    font-family: 'Cinzel', serif;
    font-weight: 700;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: #6b5040;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-0.5rem);
    transition: opacity 0.25s ease 0.1s, transform 0.25s ease 0.1s, color 0.3s ease;
}

.side-nav:hover .sn-label {
    opacity: 1;
    transform: translateX(0);
}

.sn-item:hover .sn-label {
    color: #c4a882;
}

.sn-item.active .sn-label {
    color: #ff9a50;
}

/* stagger label appearance */
.sn-item:nth-child(1) .sn-label { transition-delay: 0.05s; }
.sn-item:nth-child(2) .sn-label { transition-delay: 0.08s; }
.sn-item:nth-child(3) .sn-label { transition-delay: 0.11s; }
.sn-item:nth-child(4) .sn-label { transition-delay: 0.14s; }
.sn-item:nth-child(5) .sn-label { transition-delay: 0.17s; }
.sn-item:nth-child(6) .sn-label { transition-delay: 0.20s; }

/* ── SEPARATOR ── */
.sn-sep {
    height: 0.0625rem;
    margin: 0.375rem 0.875rem;
    background: linear-gradient(90deg, rgba(58,26,14,0.4), transparent);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.sn-sep::after {
    content: '';
    position: absolute;
    top: 0;
    left: -30%;
    width: 30%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,90,31,0.3), transparent);
    animation: sepSweep 4s ease-in-out infinite;
}

@keyframes sepSweep {
    0% { left: -30%; }
    100% { left: 130%; }
}

/* ── FOOTER ── */
.sn-footer {
    padding: 0.75rem 0.875rem;
    border-top: 0.0625rem solid rgba(42,24,16,0.4);
    flex-shrink: 0;
    overflow: hidden;
}

.sn-footer-inner {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.sn-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: rgba(255,90,31,0.08);
    border: 0.0625rem solid #3a1a0e;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
    cursor: pointer;
}

.sn-footer:hover .sn-avatar {
    border-color: rgba(255,90,31,0.35);
    box-shadow: 0 0 0.625rem rgba(255,90,31,0.15);
    transform: scale(1.1);
}

.sn-avatar svg {
    width: 1rem;
    height: 1rem;
    fill: #5a4030;
    transition: fill 0.3s ease;
}

.sn-footer:hover .sn-avatar svg {
    fill: #c47830;
}

.sn-user-info {
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-0.5rem);
    transition: opacity 0.25s ease 0.15s, transform 0.25s ease 0.15s;
}

.side-nav:hover .sn-user-info {
    opacity: 1;
    transform: translateX(0);
}

.sn-user-name {
    font-family: 'Cinzel', serif;
    font-weight: 700;
    font-size: 0.625rem;
    color: #c8b89a;
    letter-spacing: 0.05em;
}

.sn-user-role {
    font-family: 'Crimson Pro', serif;
    font-size: 0.5625rem;
    color: #4a3a2a;
    margin-top: 0.0625rem;
}

/* ── LANG LIST (outside sidebar) ── */
.sn-langs {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 3.75rem;
    z-index: 9991;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 0;
    transition: opacity 0.3s ease;
}

.sn-lang-item {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 0.45;
    padding: 0.5rem;
}

.sn-lang-item:hover {
    opacity: 1;
    transform: scale(1.15);
}

.sn-lang-item.active {
    opacity: 1;
}

.sn-lang-flag {
    width: 1.6rem;
    object-fit: cover;
    border-radius: 0.125rem;
}

/* Hide when sidebar is expanded */
.sn-langs.hidden {
    opacity: 0;
    pointer-events: none;
}

/* ══ MOBILE — hide sidebar ══ */
@media (max-width: 48rem) {
    .side-nav { display: none; }
}