/* ===== ACHIEVEMENTS PAGE ===== */
:root {
    --color-bronze: #cd7f32;
    --color-silver: #c0c0c0;
    --color-gold: #ffd700;
    --color-platinum: #e5e4e2;
    --color-diamond: #b9f2ff;
}

.achievements-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: bold;
    color: var(--bs-primary);
    margin-bottom: 0.5rem;
}

.page-header .lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* ===== LEVEL SECTION ===== */
.level-section {
    margin-bottom: 2rem;
}

.level-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.level-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.user-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--bs-primary);
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-icon {
    font-size: 100px;
    color: var(--text-secondary);
}

.level-info {
    flex: 1;
}

.level-info h2 {
    margin: 0;
    font-size: 2rem;
    font-weight: bold;
}

.level-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--bs-primary), var(--bs-info));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: bold;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.level-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--bs-success);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.level-progress {
    margin-top: 1rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ===== TABS ===== */
.nav-tabs {
    border-bottom: 2px solid var(--border-color);
}

.nav-tabs .nav-link {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.nav-tabs .nav-link:hover {
    color: var(--bs-primary);
    border-bottom-color: var(--bs-primary);
}

.nav-tabs .nav-link.active {
    color: var(--bs-primary);
    background: transparent;
    border-bottom-color: var(--bs-primary);
}

/* ===== CATEGORY FILTER ===== */
.category-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.category-filter .btn {
    border-radius: 20px;
}

/* ===== ACHIEVEMENTS GRID ===== */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.achievement-card {
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.achievement-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--border-color);
}

.achievement-card.tier-bronze::before {
    background: linear-gradient(90deg, var(--color-bronze), #a65e2e);
}

.achievement-card.tier-silver::before {
    background: linear-gradient(90deg, var(--color-silver), #a0a0a0);
}

.achievement-card.tier-gold::before {
    background: linear-gradient(90deg, var(--color-gold), #ffed4e);
}

.achievement-card.tier-platinum::before {
    background: linear-gradient(90deg, var(--color-platinum), #ffffff);
}

.achievement-card.tier-diamond::before {
    background: linear-gradient(90deg, var(--color-diamond), #00f0ff);
}

.achievement-card.locked {
    opacity: 0.7;
}

.achievement-card.unlocked {
    border-color: var(--bs-success);
    box-shadow: 0 0 20px rgba(25, 135, 84, 0.3);
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

.achievement-icon {
    text-align: center;
    font-size: 4rem;
    margin-bottom: 1rem;
    position: relative;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.achievement-icon-unlocked {
    color: var(--bs-success);
    animation: pulse 2s infinite;
}

.achievement-icon-locked {
    color: var(--text-secondary);
    filter: grayscale(100%);
}

.achievement-icon-secret {
    color: var(--bs-warning);
}

.unlock-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--bs-success);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

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

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

.achievement-tier {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    margin-bottom: 0.5rem;
    background: var(--border-color);
    color: var(--text-primary);
}

.tier-bronze .achievement-tier {
    background: var(--color-bronze);
    color: white;
}

.tier-silver .achievement-tier {
    background: var(--color-silver);
    color: #333;
}

.tier-gold .achievement-tier {
    background: var(--color-gold);
    color: #333;
}

.tier-platinum .achievement-tier {
    background: var(--color-platinum);
    color: #333;
}

.tier-diamond .achievement-tier {
    background: var(--color-diamond);
    color: #333;
}

.achievement-name {
    font-size: 1.25rem;
    font-weight: bold;
    margin: 0.5rem 0;
    color: var(--text-primary);
}

.achievement-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    min-height: 3rem;
}

.achievement-unlocked-info {
    font-size: 0.85rem;
    color: var(--bs-success);
    margin-bottom: 0.5rem;
}

.achievement-progress {
    margin: 1rem 0;
}

.progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.progress-percentage {
    font-weight: bold;
    color: var(--bs-info);
}

/* Progress bar colors by tier */
.bg-bronze {
    background-color: var(--color-bronze) !important;
}

.bg-silver {
    background-color: var(--color-silver) !important;
}

.bg-gold {
    background-color: var(--color-gold) !important;
}

.bg-platinum {
    background-color: var(--color-platinum) !important;
}

.bg-diamond {
    background-color: var(--color-diamond) !important;
}

.achievement-reward {
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--bs-warning);
}

/* ===== CHALLENGES SECTION ===== */
.challenges-section {
    margin-top: 2rem;
}

.challenge-card {
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    height: 100%;
}

.challenge-card.completed {
    border-color: var(--bs-success);
    background: linear-gradient(135deg, var(--surface-color), rgba(25, 135, 84, 0.1));
}

.challenge-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.challenge-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    position: relative;
}

.challenge-icon {
    font-size: 2.5rem;
    color: var(--bs-warning);
    min-width: 50px;
    text-align: center;
}

.challenge-info {
    flex: 1;
}

.challenge-info h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.challenge-info p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.completed-badge {
    position: absolute;
    top: -0.5rem;
    right: -0.5rem;
    font-size: 2rem;
    color: var(--bs-success);
}

.challenge-progress {
    margin: 1rem 0;
}

.progress-stats {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.xp-reward {
    font-weight: bold;
    color: var(--bs-warning);
}

.challenge-footer {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ===== LEADERBOARD SECTION ===== */
.leaderboard-section {
    margin-top: 2rem;
}

.leaderboard-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.leaderboard-card h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.leaderboard-card table {
    margin: 0;
}

.rank-badge {
    font-size: 1.5rem;
}

.rank-number {
    font-weight: bold;
    color: var(--text-secondary);
}

.avatar-small {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    margin-right: 0.5rem;
    vertical-align: middle;
}

.level-badge-small {
    background: linear-gradient(135deg, var(--bs-primary), var(--bs-info));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: bold;
}

/* ===== LOADING AND ERROR STATES ===== */
.loading-spinner {
    text-align: center;
    padding: 4rem 0;
}

.loading-spinner p {
    margin-top: 1rem;
    color: var(--text-secondary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .achievements-grid {
        grid-template-columns: 1fr;
    }

    .level-header {
        flex-direction: column;
        text-align: center;
    }

    .level-stats {
        justify-content: center;
        width: 100%;
    }

    .page-header h1 {
        font-size: 2rem;
    }
}

/* ===== ACHIEVEMENT NOTIFICATIONS ===== */
.achievement-notifications {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.achievement-notification,
.levelup-notification {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
    transform: translateX(450px);
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.achievement-notification.show,
.levelup-notification.show {
    transform: translateX(0);
    opacity: 1;
}

.achievement-notification.tier-bronze {
    border-left: 5px solid var(--color-bronze);
}

.achievement-notification.tier-silver {
    border-left: 5px solid var(--color-silver);
}

.achievement-notification.tier-gold {
    border-left: 5px solid var(--color-gold);
    box-shadow: 0 8px 32px rgba(255, 215, 0, 0.3);
}

.achievement-notification.tier-platinum {
    border-left: 5px solid var(--color-platinum);
}

.achievement-notification.tier-diamond {
    border-left: 5px solid var(--color-diamond);
    box-shadow: 0 8px 32px rgba(185, 242, 255, 0.3);
}

.levelup-notification {
    border-left: 5px solid var(--bs-success);
    box-shadow: 0 8px 32px rgba(25, 135, 84, 0.3);
}

.notification-content {
    position: relative;
    z-index: 2;
}

.notification-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 10;
}

.notification-icon {
    font-size: 2.5rem;
    color: var(--bs-warning);
    animation: bounce 1s ease-in-out;
}

.levelup-notification .notification-icon {
    color: var(--bs-success);
}

.notification-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 20;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.2s;
    pointer-events: auto;
}

.notification-close-btn:hover {
    opacity: 1;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) scale(1);
    }
    40% {
        transform: translateY(-10px) scale(1.1);
    }
    60% {
        transform: translateY(-5px) scale(1.05);
    }
}

.notification-info {
    flex: 1;
}

.notification-title {
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--bs-warning);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.levelup-notification .notification-title {
    color: var(--bs-success);
}

.notification-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

.achievement-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    margin-bottom: 0.5rem;
    background: var(--bs-warning);
    color: #333;
}

.notification-body h4 {
    margin: 0.5rem 0;
    font-size: 1.3rem;
    font-weight: bold;
    color: white;
}

.notification-body p {
    margin: 0.5rem 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.xp-reward {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--bs-warning);
    margin-top: 0.5rem;
}

.level-display {
    font-size: 2.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--bs-success), var(--bs-info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0.5rem 0;
}

.notification-animation {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
        transparent 30%, 
        rgba(255, 255, 255, 0.1) 50%, 
        transparent 70%);
    background-size: 200% 200%;
    animation: shimmer 2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.btn-close-white {
    opacity: 0.7;
}

.btn-close-white:hover {
    opacity: 1;
}

@media (max-width: 768px) {
    .achievement-notifications {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
    
    .achievement-notification,
    .levelup-notification {
        transform: translateY(-150px);
    }
    
    .achievement-notification.show,
    .levelup-notification.show {
        transform: translateY(0);
    }
}