:root {
    /* 컬러 팔레트: Deep Space & Neon Accent */
    --bg-dark: #020617;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-highlight: rgba(255, 255, 255, 0.15);

    --text-main: #f8fafc;
    --text-muted: #94a3b8;

    --accent-primary: #3b82f6;
    /* Blue */
    --accent-secondary: #8b5cf6;
    /* Purple */
    --accent-glow: rgba(59, 130, 246, 0.6);

    --gradient-text: linear-gradient(135deg, #60a5fa 0%, #c084fc 100%);
    --gradient-btn: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
}

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

body {
    font-family: 'Pretendard', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 100px 20px 60px 20px;
    overflow-x: hidden;
    word-break: keep-all;
}

/* ✅ 커스텀 스크롤바 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    border: 2px solid var(--bg-dark);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* --- 배경 애니메이션 (Moving Orbs) --- */
.ambient-light {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.35;
    animation: floatOrb 25s infinite ease-in-out alternate;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    top: -150px;
    left: -150px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #581c87, #a855f7);
    bottom: -100px;
    right: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #0f766e, #2dd4bf);
    top: 50%;
    left: 55%;
    animation-delay: -12s;
    opacity: 0.2;
}

@keyframes floatOrb {
    0% {
        transform: translate(0, 0) scale(1);
    }

    50% {
        transform: translate(40px, -30px) scale(1.05);
    }

    100% {
        transform: translate(-20px, 60px) scale(1.12);
    }
}

/* --- GNB (Global Navigation Bar) --- */
.gnb {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: rgba(2, 6, 23, 0.25);
    /* 투명도 대폭 증가 */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.gnb-logo {
    font-size: 1.3rem;
    font-weight: 800;
    color: #e2e8f0;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-shadow: 0 2px 10px rgba(59, 130, 246, 0.5);
}

.gnb-logo i {
    color: #3b82f6;
    font-size: 1.5rem;
}

.gnb-menu {
    display: flex;
    align-items: center;
    gap: 12px;
}

.gift-btn {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: #f472b6;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.gift-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(244, 114, 182, 0.4) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
}

.gift-btn:hover {
    border-color: #f472b6;
    transform: rotate(-10deg) scale(1.05);
    color: #fff;
    box-shadow: 0 0 20px rgba(244, 114, 182, 0.3);
}

.gift-btn:hover::before {
    opacity: 1;
}

.staff-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.staff-btn:hover {
    background: var(--glass-highlight);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
}

.staff-btn .fa-lock {
    transition: transform 0.3s;
}

.staff-btn:hover .fa-lock {
    transform: rotate(-15deg);
}

/* --- 헤더 --- */
.container {
    width: 100%;
    max-width: 900px;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    margin: 40px 0 60px;
    animation: fadeIn 1s ease-out;
}

header h1 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 15px;
    background: linear-gradient(90deg, #60a5fa, #c084fc, #f472b6, #60a5fa);
    background-size: 300% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 4s ease-in-out infinite;
    filter: drop-shadow(0 0 40px rgba(139, 92, 246, 0.3));
}

@keyframes shimmer {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

header p {
    color: var(--text-muted);
    font-size: 1.05rem;
    font-weight: 300;
    display: inline-block;
    padding: 8px 20px;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    letter-spacing: 0.3px;
}

/* --- 랜덤 명언 위젯 --- */
.quote-widget {
    margin: 35px auto 0;
    max-width: 650px;
    padding: 22px 40px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: relative;
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.quote-widget:hover {
    border-color: rgba(96, 165, 250, 0.4);
    box-shadow: 0 10px 40px -10px rgba(59, 130, 246, 0.2);
    background: rgba(255, 255, 255, 0.04);
}

.quote-content {
    position: relative;
    z-index: 2;
    margin-bottom: 12px;
}

.quote-text-en {
    font-size: 1.15rem;
    font-weight: 600;
    color: #e2e8f0;
    line-height: 1.5;
    margin-bottom: 8px;
    font-style: italic;
    transition: opacity 0.3s ease;
}

.quote-text-ko {
    font-size: 0.95rem;
    font-weight: 300;
    color: var(--text-muted);
    line-height: 1.4;
    word-break: keep-all;
    transition: opacity 0.3s ease;
}

.quote-icon-bg {
    position: absolute;
    top: -10px;
    left: 15px;
    font-size: 4rem;
    color: var(--glass-highlight);
    opacity: 0.1;
    z-index: 1;
}

.quote-author {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
    position: relative;
    z-index: 2;
    transition: opacity 0.3s ease;
}

.quote-refresh {
    position: absolute;
    bottom: 15px;
    right: 18px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quote-refresh:hover {
    color: var(--accent-primary);
    transform: rotate(180deg);
}

.quote-refresh:active {
    transform: rotate(360deg) scale(0.9);
}

/* --- 아코디언 (Glassmorphism 2.0) --- */
.accordion-item {
    margin-bottom: 24px;
    border-radius: 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.accordion-item:hover {
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.3);
}

.accordion-header {
    width: 100%;
    padding: 28px 32px;
    background: transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    border: none;
    outline: none;
    color: var(--text-main);
}

.header-content {
    display: flex;
    align-items: center;
    gap: 18px;
}

.header-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: #60a5fa;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: 0.3s;
}

.accordion-header:hover .header-icon {
    background: var(--accent-primary);
    color: #fff;
    box-shadow: 0 0 15px var(--accent-glow);
}

.header-text h3 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.header-text span {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: block;
    margin-top: 4px;
    font-weight: 400;
}

.accordion-toggle {
    color: var(--text-muted);
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.accordion-header.active .accordion-toggle {
    transform: rotate(180deg);
    color: #fff;
}

.accordion-body {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, opacity 0.4s ease;
    background: rgba(0, 0, 0, 0.2);
}

.accordion-header.active+.accordion-body {
    opacity: 1;
}

/* --- 그리드 & 카드 --- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 30px;
}

.card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    padding: 25px;
    display: flex;
    flex-direction: column;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 18px;
    padding: 1px;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.0), rgba(192, 132, 252, 0.0));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    transition: background 0.4s ease;
    pointer-events: none;
}

.card:hover::before {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.6), rgba(192, 132, 252, 0.6));
}

.card:hover {
    transform: translateY(-6px) scale(1.01);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 40px -10px rgba(59, 130, 246, 0.15), 0 15px 30px -5px rgba(0, 0, 0, 0.4);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.05);
    color: #94a3b8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 15px;
    transition: 0.3s;
}

.card:hover .card-icon {
    background: var(--gradient-btn);
    color: #fff;
}

.card h2 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #fff;
}

.card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 25px;
    flex-grow: 1;
}

/* 다운로드 버튼 */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    border-radius: 12px;
    background: var(--gradient-btn);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn:hover {
    filter: brightness(1.15);
    box-shadow: 0 6px 30px var(--accent-glow);
    transform: translateY(-2px) scale(1.03);
}

.btn:hover::after {
    opacity: 1;
}

.btn:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.3);
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-muted);
    box-shadow: none;
}

.btn-outline:hover {
    border-color: #fff;
    color: #fff;
}

.password-badge {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    cursor: pointer;
    transition: 0.2s;
}

.password-badge span {
    color: #f472b6;
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

.password-badge:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
}

/* --- [공사중 카드 스타일] --- */
.card-construction {
    opacity: 0.75;
    background-image: repeating-linear-gradient(45deg,
            rgba(255, 255, 255, 0.01),
            rgba(255, 255, 255, 0.01) 10px,
            rgba(255, 255, 255, 0.03) 10px,
            rgba(255, 255, 255, 0.03) 20px);
}

.card-construction:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--glass-border);
}

.card-construction .card-icon {
    color: #64748b;
    background: rgba(255, 255, 255, 0.03);
}

.card-construction h2 {
    color: #94a3b8;
}

.btn-disabled {
    background: #334155;
    color: #64748b;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-disabled:hover {
    filter: none;
    transform: none;
    box-shadow: none;
}

/* --- Staff 섹션 (Hidden) --- */
#staff-section {
    display: none;
    border-color: rgba(255, 255, 255, 0.2);
}

#staff-section .header-icon {
    color: #fff;
    background: #333;
}

#staff-section .accordion-header:hover .header-icon {
    background: #24292e;
    color: #fff;
}

.github-btn {
    background: #24292e !important;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.github-btn:hover {
    background: #000 !important;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

/* --- 모달 --- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 100;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.modal-overlay.show {
    display: flex;
    opacity: 1;
}

.login-box {
    background: rgba(2, 6, 23, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 35px 30px;
    border-radius: 20px;
    width: 360px;
    max-width: 90%;
    text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
    transform: scale(0.95);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.show .login-box {
    transform: scale(1);
}

.login-box h2 {
    color: #f8fafc;
    margin-bottom: 25px;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.input-group input {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 12px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    color: #fff;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s ease;
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.input-group input:focus {
    border-color: #60a5fa;
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.15);
}

.modal-close {
    margin-top: 20px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: underline;
}

/* Toast */
#toast {
    visibility: hidden;
    min-width: 250px;
    background: rgba(255, 255, 255, 0.9);
    color: #0f172a;
    text-align: center;
    border-radius: 50px;
    padding: 16px 24px;
    position: fixed;
    z-index: 1000;
    left: 50%;
    bottom: 40px;
    transform: translateX(-50%) translateY(20px);
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#toast.show {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Toast 아이콘 */
#toast .toast-icon {
    margin-right: 6px;
}

footer {
    margin-top: 80px;
    color: rgba(255, 255, 255, 0.2);
    font-size: 0.85rem;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Scroll Reveal --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal:nth-child(2) {
    transition-delay: 0.1s;
}

.reveal:nth-child(3) {
    transition-delay: 0.2s;
}

/* --- Cursor Spotlight --- */
.cursor-spotlight {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s;
    opacity: 0;
}

body:hover .cursor-spotlight {
    opacity: 1;
}

/* --- Category Icon Colors --- */
.icon-blue {
    color: #3b82f6;
}

.icon-green {
    color: #22c55e;
}

.icon-red {
    color: #ef4444;
}

.icon-purple {
    color: #a855f7;
}

.icon-orange {
    color: #f97316;
}

.icon-teal {
    color: #14b8a6;
}

.card:hover .icon-blue,
.card:hover .icon-green,
.card:hover .icon-red,
.card:hover .icon-purple,
.card:hover .icon-orange,
.card:hover .icon-teal {
    color: #fff;
}

/* --- Back to Top --- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--gradient-btn);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.4);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 50;
    pointer-events: none;
}

.back-to-top.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 99, 235, 0.6);
}

.back-to-top:active {
    transform: translateY(0) scale(0.95);
}

/* --- Tool Counter in Header --- */
.tool-count {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
    animation: fadeIn 1.2s ease-out;
}

.count-item {
    text-align: center;
}

.count-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.count-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 2px;
}

/* --- Accordion Header Count --- */
.tool-counter {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 10px;
    font-weight: 500;
}

/* --- Daily Memo --- */
.memo-toggle {
    position: fixed;
    bottom: 90px;
    right: 30px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--accent-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 50;
}

.memo-toggle:hover {
    background: var(--accent-primary);
    color: #fff;
    transform: scale(1.1);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.memo-panel {
    position: fixed;
    top: 0;
    right: -350px;
    width: 320px;
    height: 100vh;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--glass-border);
    z-index: 1000;
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
}

.memo-panel.open {
    right: 0;
}

.memo-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--glass-border);
}

.memo-header h3 {
    font-size: 1.1rem;
    color: #f8fafc;
    display: flex;
    align-items: center;
    gap: 8px;
}

.memo-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    transition: 0.2s;
}

.memo-close:hover {
    color: #ef4444;
    transform: rotate(90deg);
}

.memo-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.memo-info {
    font-size: 0.8rem;
    color: #94a3b8;
    background: rgba(0, 0, 0, 0.3);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 15px;
    line-height: 1.4;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.memo-info strong {
    color: #f472b6;
}

.memo-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 15px;
    padding-right: 5px;
}

.memo-list::-webkit-scrollbar {
    width: 6px;
}

.memo-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.memo-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 12px;
    padding-right: 35px;
    /* 삭제 버튼 공간 확보 */
    font-size: 0.9rem;
    color: #e2e8f0;
    line-height: 1.5;
    word-break: break-all;
    position: relative;
}

.memo-delete-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 0.9rem;
    opacity: 0.5;
    transition: 0.2s;
}

.memo-delete-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}

.memo-item-time {
    font-size: 0.75rem;
    color: #94a3b8;
    margin-top: 6px;
    text-align: right;
    display: block;
}

.memo-input-container {
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-top: 1px solid var(--glass-border);
    margin: 0 -20px -20px -20px;
}

#memoTextarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 10px;
    color: #fff;
    font-size: 0.9rem;
    resize: none;
    outline: none;
    font-family: inherit;
    transition: 0.3s;
}

#memoTextarea:focus {
    border-color: #60a5fa;
    background: rgba(0, 0, 0, 0.4);
}

/* --- Memo Author Input --- */
.memo-author-input {
    width: 100%;
    padding: 10px 12px;
    margin-bottom: 8px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    color: #fff;
    font-size: 0.85rem;
    outline: none;
    transition: all 0.3s ease;
}

.memo-author-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.memo-author-input:focus {
    border-color: #60a5fa;
    background: rgba(0, 0, 0, 0.4);
    box-shadow: 0 0 0 2px rgba(96, 165, 250, 0.15);
}

/* --- Memo Delete Button & Admin Highlight --- */
.memo-item {
    position: relative;
    padding-right: 30px;
    transition: all 0.3s ease;
}

.memo-item.admin-memo {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.3);
    box-shadow: 0 4px 15px rgba(251, 191, 36, 0.05);
}

.memo-item.admin-memo .memo-item-time {
    color: rgba(251, 191, 36, 0.7);
}

.memo-delete-btn {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, color 0.2s;
}

.memo-item:hover .memo-delete-btn {
    opacity: 1;
}

.memo-delete-btn:hover {
    color: #ef4444;
    /* red */
}

@media (max-width: 600px) {
    header h1 {
        font-size: 2.2rem;
    }

    .grid {
        padding: 20px;
    }

    .accordion-header {
        padding: 20px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }

    .memo-toggle {
        bottom: 70px;
        right: 20px;
        width: 40px;
        height: 40px;
    }

    .tool-count {
        gap: 20px;
    }

    .count-number {
        font-size: 1.5rem;
    }
}

/* --- Logout Button --- */
.logout-btn {
    background: rgba(239, 68, 68, 0.15);
    /* 연한 빨간색 배경 */
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.3);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    margin-left: 10px;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.25);
    border-color: rgba(239, 68, 68, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.2);
    color: #fef2f2;
}

/* --- PassGen Nav Button --- */
.pwgen-nav-btn {
    background: rgba(251, 191, 36, 0.15);
    color: #fde68a;
    border: 1px solid rgba(251, 191, 36, 0.3);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.pwgen-nav-btn:hover {
    background: rgba(251, 191, 36, 0.25);
    border-color: rgba(251, 191, 36, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(251, 191, 36, 0.2);
    color: #fef3c7;
}

/* --- Password Generator --- */
.pw-gen-container {
    margin-top: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.pw-display-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    padding: 12px 15px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    color: #a78bfa;
    letter-spacing: 2px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 15px;
    word-break: break-all;
}

.icon-btn {
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s;
    padding: 5px;
}

.icon-btn:hover {
    color: #fff;
    transform: scale(1.1);
}

.pw-controls {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.pw-length-slider {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.85rem;
    color: #cbd5e1;
}

.pw-length-slider input[type="range"] {
    width: 100%;
    accent-color: #3b82f6;
    cursor: pointer;
}

.pw-checkboxes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    font-size: 0.85rem;
    color: #e2e8f0;
}

.pw-checkboxes label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.pw-checkboxes input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: #3b82f6;
}