/* --- 🎨 Core Design System & Tokens --- */
:root {
    --bg-dark: #0a0c14;
    --bg-card: rgba(20, 24, 38, 0.6);
    --border-glass: rgba(255, 255, 255, 0.06);
    --border-glass-active: rgba(255, 255, 255, 0.15);
    
    --primary: #5c6eff;
    --primary-glow: rgba(92, 110, 255, 0.4);
    
    --color-player: #ff4a7d;
    --color-player-glow: rgba(255, 74, 125, 0.3);
    
    --color-booking: #00e5ff;
    --color-booking-glow: rgba(0, 229, 255, 0.3);
    
    --color-metronome: #a855f7;
    --color-metronome-glow: rgba(168, 85, 247, 0.3);

    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-disabled: #4b5563;
    
    --shadow-premium: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    --font-sans: 'Outfit', 'Noto Sans KR', sans-serif;
}

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

html, body {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* --- ✨ Dynamic Glowing Backgrounds --- */
.bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
}

.bg-glow-1 {
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    top: -10%;
    left: -10%;
    animation: floating-glow 20s infinite alternate;
}

.bg-glow-2 {
    background: radial-gradient(circle, var(--color-metronome) 0%, transparent 70%);
    bottom: -10%;
    right: -10%;
    animation: floating-glow 25s infinite alternate-reverse;
}

@keyframes floating-glow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(100px, 50px) scale(1.2); }
}

/* --- 🏛️ Glassmorphism CSS --- */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    box-shadow: var(--shadow-premium);
    transition: border 0.3s ease, box-shadow 0.3s ease;
}

/* --- 🔐 Login CSS --- */
#login-section {
    display: none;
    width: 100%;
    max-width: 440px;
    padding: 20px;
    z-index: 10;
}

#login-section.active {
    display: block;
    animation: fade-in-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.login-card {
    padding: 40px 32px;
    text-align: center;
}

.logo-area {
    margin-bottom: 35px;
}

.logo-icon {
    font-size: 3.5rem;
    color: var(--primary);
    text-shadow: 0 0 25px var(--primary-glow);
    margin-bottom: 15px;
    animation: pulse-logo 3s infinite ease-in-out;
}

@keyframes pulse-logo {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.logo-area h1 {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 6px;
    background: linear-gradient(135deg, #fff 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-area p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.input-group {
    text-align: left;
    margin-bottom: 24px;
}

.input-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-group label i {
    margin-right: 4px;
}

.input-group input {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    color: #fff;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 15px rgba(92, 110, 255, 0.2);
}

.error-msg {
    display: none;
    color: #ff4a4a;
    font-size: 0.85rem;
    margin-bottom: 20px;
    text-align: left;
    align-items: center;
    gap: 6px;
    animation: shake 0.4s ease;
}

.error-msg.active {
    display: flex;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

.btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #3b4eff 100%);
    color: #fff;
    box-shadow: 0 8px 20px -6px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px -4px var(--primary-glow);
    filter: brightness(1.1);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-loader {
    display: none;
}

.loading .btn-text {
    display: none;
}

.loading .btn-loader {
    display: inline-block;
}

.login-footer {
    margin-top: 30px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --- 💻 Dashboard CSS --- */
#dashboard-section {
    display: none;
    width: 100%;
    max-width: 1100px;
    padding: 40px 20px;
    z-index: 10;
}

#dashboard-section.active {
    display: block;
    animation: fade-in-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.header-logo i {
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary-glow);
}

.user-badge-area {
    display: flex;
    align-items: center;
    gap: 15px;
}

.role-badge {
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-glass);
    white-space: nowrap;
}

/* 등급별 뱃지 스타일 */
.badge-admin {
    background: rgba(255, 74, 125, 0.15) !important;
    color: var(--color-player) !important;
    border-color: rgba(255, 74, 125, 0.3) !important;
}

.badge-user {
    background: rgba(168, 85, 247, 0.15) !important;
    color: var(--color-metronome) !important;
    border-color: rgba(168, 85, 247, 0.3) !important;
}

.badge-guest {
    background: rgba(0, 229, 255, 0.15) !important;
    color: var(--color-booking) !important;
    border-color: rgba(0, 229, 255, 0.3) !important;
}

.btn-text {
    background: transparent;
    color: var(--text-muted);
    font-size: 0.9rem;
    width: auto;
    padding: 6px 12px;
    white-space: nowrap;
}

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

.welcome-banner {
    margin-bottom: 40px;
}

.welcome-banner h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.welcome-banner p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* 앱 그리드 카드 레이아웃 */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.app-card {
    padding: 35px 30px;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
}

.app-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(100px circle at var(--x, 0px) var(--y, 0px), rgba(255,255,255,0.04), transparent 80%);
    pointer-events: none;
}

.app-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.6rem;
    margin-bottom: 24px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.color-player {
    background: linear-gradient(135deg, var(--color-player) 0%, #d81b60 100%);
    color: #fff;
    box-shadow: 0 8px 20px var(--color-player-glow);
}

.color-booking {
    background: linear-gradient(135deg, var(--color-booking) 0%, #00b0ff 100%);
    color: #fff;
    box-shadow: 0 8px 20px var(--color-booking-glow);
}

.color-metronome {
    background: linear-gradient(135deg, var(--color-metronome) 0%, #7e22ce 100%);
    color: #fff;
    box-shadow: 0 8px 20px var(--color-metronome-glow);
}

.app-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.app-desc {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 30px;
    flex-grow: 1;
}

.app-action-area {
    margin-top: auto;
}

.btn-card-action {
    display: inline-flex;
    width: auto;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: #fff;
    border-radius: 10px;
    text-decoration: none;
}

.app-card:hover {
    border-color: var(--border-glass-active);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    transform: translateY(-4px);
}

.app-card:hover .app-icon-wrapper {
    transform: translateY(-4px) scale(1.05);
}

/* 권한 차단된 카드 상태 */
.app-card.disabled {
    opacity: 0.45;
    pointer-events: none;
    cursor: not-allowed;
}

.restricted-badge {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: #ff4a7d;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 10px;
}

.app-card.disabled .restricted-badge {
    display: inline-flex;
}

/* --- 🎛️ Metronome & Booking Modal CSS --- */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 7, 12, 0.85);
    backdrop-filter: blur(8px);
    z-index: 100;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
    animation: fade-in 0.3s ease forwards;
}

.modal-content {
    width: 100%;
    max-width: 460px;
    padding: 30px;
    position: relative;
    border-color: var(--border-glass-active);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 15px;
}

.modal-header h3 {
    font-size: 1.15rem;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-metronome);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: #fff;
}



/* 알림 안내창 전용 */
.notice-large-icon {
    font-size: 3rem;
    color: var(--color-booking);
    margin-bottom: 15px;
}

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

.mt-2 {
    margin-top: 20px;
}

/* --- 🪄 Keyframes & Utility --- */
@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* --- 📱 Responsive --- */
@media (max-width: 640px) {
    /* Stack header and align items centrally */
    .main-header {
        flex-direction: column;
        align-items: center;
        gap: 12px;
        margin-bottom: 25px;
    }
    
    .user-badge-area {
        width: 100%;
        justify-content: center;
        gap: 8px;
        flex-wrap: wrap;
    }
    
    .btn-text {
        font-size: 0.8rem;
        padding: 5px 10px;
    }
    
    .role-badge {
        font-size: 0.75rem;
        padding: 5px 10px;
    }

    /* 3-column app grid row layout on mobile */
    .apps-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 10px !important;
    }
    
    .app-card {
        padding: 16px 8px !important;
        align-items: center;
        text-align: center;
        border-radius: 18px !important;
    }
    
    .app-icon-wrapper {
        width: 48px !important;
        height: 48px !important;
        font-size: 1.3rem !important;
        margin-bottom: 10px !important;
        border-radius: 12px !important;
    }
    
    .app-card h3 {
        font-size: 0.78rem !important;
        line-height: 1.25;
        margin-bottom: 0 !important;
        font-weight: 700;
        white-space: normal;
        word-break: keep-all;
    }
    
    .app-desc {
        display: none !important;
    }
    
    .restricted-badge {
        font-size: 0.65rem !important;
        margin-top: 6px !important;
        gap: 3px !important;
    }
    
    .restricted-badge i {
        font-size: 0.65rem !important;
    }
    
    .welcome-banner h2 {
        font-size: 1.6rem;
        text-align: center;
        margin-bottom: 6px;
    }
    
    .welcome-banner p {
        font-size: 0.9rem;
        text-align: center;
    }
    
    .login-card {
        padding: 30px 20px;
    }
}

/* --- 🚪 2-Step Login UI Elements --- */
.role-selection-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 10px;
    animation: fade-in 0.4s ease;
}

.btn-role-select {
    width: 100%;
    padding: 18px 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    color: #fff;
    font-family: inherit;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.btn-role-select i {
    font-size: 1.3rem;
    width: 24px;
    text-align: center;
    transition: transform 0.3s ease;
}

/* 등급별 호버, 포커스, 클릭 활성 상태 테마 (흰바탕 글자 묻힘 이슈 해결) */
.select-admin:hover,
.select-admin:focus,
.select-admin:active {
    background: rgba(255, 74, 125, 0.08) !important;
    border-color: var(--color-player) !important;
    box-shadow: 0 0 20px var(--color-player-glow) !important;
    color: var(--color-player) !important;
    transform: translateY(-2px);
    outline: none;
}

.select-user:hover,
.select-user:focus,
.select-user:active {
    background: rgba(168, 85, 247, 0.08) !important;
    border-color: var(--color-metronome) !important;
    box-shadow: 0 0 20px var(--color-metronome-glow) !important;
    color: var(--color-metronome) !important;
    transform: translateY(-2px);
    outline: none;
}

.select-guest:hover,
.select-guest:focus,
.select-guest:active {
    background: rgba(0, 229, 255, 0.08) !important;
    border-color: var(--color-booking) !important;
    box-shadow: 0 0 20px var(--color-booking-glow) !important;
    color: var(--color-booking) !important;
    transform: translateY(-2px);
    outline: none;
}

.btn-role-select:hover i {
    transform: scale(1.15);
}

/* 2단계 활성화 화면의 역할 표시 */
.selected-role-display {
    margin-bottom: 25px;
    text-align: center;
}

.role-label {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
}

.label-admin {
    background: rgba(255, 74, 125, 0.1);
    color: var(--color-player);
    border-color: rgba(255, 74, 125, 0.25);
    box-shadow: 0 0 15px rgba(255, 74, 125, 0.1);
}

.label-user {
    background: rgba(168, 85, 247, 0.1);
    color: var(--color-metronome);
    border-color: rgba(168, 85, 247, 0.25);
    box-shadow: 0 0 15px rgba(168, 85, 247, 0.1);
}

.label-guest {
    background: rgba(0, 229, 255, 0.1);
    color: var(--color-booking);
    border-color: rgba(0, 229, 255, 0.25);
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.1);
}

/* 로그인 폼 내 액션 버튼 배치 */
.login-action-buttons {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 12px;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-muted);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: var(--border-glass-active);
}