/* === Modern Profile Styles === */
:root {
    --primary-color: #00ff00;
    --primary-dark: #00cc00;
    --primary-light: #00ff88;
    --secondary-color: #00ccff;
    --accent-color: #ff00ff;
    --bg-dark: #000000;
    --bg-darker: #001100;
    --bg-card: rgba(0, 0, 0, 0.85);
    --text-primary: #ffffff;
    --text-secondary: #00cc66;
    --text-muted: #666;
    --border-color: #00ff00;
    --shadow-glow: 0 0 20px rgba(0, 255, 0, 0.3);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 12px;
    --border-radius-sm: 8px;
}

/* === Base Layout === */
.profile-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(20px, 4vw, 40px);
    max-width: 1400px;
    margin: 0 auto;
    padding: clamp(20px, 4vw, 40px);
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    color: var(--text-primary);
    font-family: 'Courier New', 'Share Tech Mono', monospace;
    min-height: 100vh;
    box-sizing: border-box;
}

/* === Responsive Grid === */
@media (max-width: 1200px) {
    .profile-layout {
        grid-template-columns: 1fr;
        gap: clamp(15px, 3vw, 30px);
        padding: clamp(15px, 3vw, 30px);
    }
}

@media (max-width: 768px) {
    .profile-layout {
        gap: clamp(10px, 2.5vw, 20px);
        padding: clamp(10px, 2.5vw, 20px);
    }
}

@media (max-width: 480px) {
    .profile-layout {
        gap: clamp(8px, 2vw, 15px);
        padding: clamp(8px, 2vw, 15px);
    }
}

/* === Profile Card === */
.profile-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: clamp(20px, 4vw, 30px);
    box-shadow: var(--shadow-glow), var(--shadow-card);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

.profile-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 255, 0, 0.4);
}

/* === Profile Header === */
.profile-title {
    text-align: center;
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: clamp(20px, 4vw, 30px);
    letter-spacing: 2px;
    text-transform: uppercase;
    background: linear-gradient(45deg, var(--primary-color), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.profile-title::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: var(--primary-color);
}

/* === Avatar === */
.profile-avatar {
    width: clamp(100px, 25vw, 150px);
    height: clamp(100px, 25vw, 150px);
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border-color);
    display: block;
    margin: 0 auto clamp(20px, 4vw, 30px);
    box-shadow: var(--shadow-glow);
    transition: var(--transition);
    position: relative;
}

.profile-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 255, 0, 0.6);
}

.profile-avatar::after {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    z-index: -1;
    opacity: 0;
    transition: var(--transition);
}

.profile-avatar:hover::after {
    opacity: 1;
}

/* === Stats Summary === */
.profile-stats-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: clamp(10px, 2vw, 15px);
    margin-bottom: clamp(25px, 4vw, 35px);
    padding: clamp(15px, 3vw, 20px);
    background: rgba(0, 20, 0, 0.3);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(5px);
}

.stat-item {
    text-align: center;
    padding: clamp(8px, 2vw, 12px);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 255, 0, 0.1), transparent);
    opacity: 0;
    transition: var(--transition);
}

.stat-item:hover::before {
    opacity: 1;
}

.stat-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 255, 0, 0.3);
}

.stat-icon {
    display: block;
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: clamp(5px, 1vw, 8px);
    filter: drop-shadow(0 0 5px var(--primary-color));
}

.stat-value {
    display: block;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: bold;
    color: var(--primary-light);
    text-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
    margin-bottom: clamp(2px, 0.5vw, 4px);
}

.stat-label {
    display: block;
    font-size: clamp(0.7rem, 2vw, 0.9rem);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* === Form Elements === */
.profile-form {
    margin-top: clamp(20px, 4vw, 30px);
}

.profile-input-group {
    margin-bottom: clamp(15px, 3vw, 20px);
}

.profile-label {
    display: block;
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    color: var(--text-primary);
    margin-bottom: clamp(5px, 1vw, 8px);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.profile-input input,
.profile-input textarea,
.profile-input select {
    width: 100%;
    padding: clamp(10px, 2.5vw, 15px);
    background: rgba(0, 20, 0, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    transition: var(--transition);
    box-sizing: border-box;
    backdrop-filter: blur(5px);
}

.profile-input input:focus,
.profile-input textarea:focus,
.profile-input select:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.3);
    background: rgba(0, 30, 0, 0.7);
}

.profile-input textarea {
    resize: vertical;
    min-height: 80px;
}

.profile-button {
    width: 100%;
    padding: clamp(12px, 3vw, 18px);
    background: linear-gradient(45deg, var(--primary-color), var(--primary-dark));
    border: none;
    border-radius: var(--border-radius-sm);
    color: var(--bg-dark);
    font-family: inherit;
    font-size: clamp(1rem, 2.5vw, 1.1rem);
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.profile-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.profile-button:hover::before {
    left: 100%;
}

.profile-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 0, 0.4);
    background: linear-gradient(45deg, var(--primary-light), var(--primary-color));
}

.profile-logout {
    display: block;
    text-align: center;
    margin-top: clamp(15px, 3vw, 20px);
    padding: clamp(10px, 2.5vw, 15px);
    color: #ff4444;
    text-decoration: none;
    border: 1px solid #ff4444;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.profile-logout:hover {
    background: #ff4444;
    color: var(--bg-dark);
    box-shadow: 0 0 15px rgba(255, 68, 68, 0.4);
}

/* === Sections === */
.profile-section {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: clamp(20px, 4vw, 30px);
    margin-bottom: clamp(20px, 4vw, 30px);
    box-shadow: var(--shadow-glow), var(--shadow-card);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.profile-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.profile-section:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 255, 0, 0.3);
}

.profile-section-title {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--primary-light);
    margin-bottom: clamp(15px, 3vw, 20px);
    display: flex;
    align-items: center;
    gap: clamp(8px, 2vw, 12px);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.profile-section-title .material-icons {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--primary-color);
}

/* === Achievements === */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: clamp(12px, 2.5vw, 18px);
    margin-top: clamp(15px, 3vw, 20px);
}

.achievement-item {
    display: flex;
    align-items: center;
    padding: clamp(12px, 2.5vw, 18px);
    background: rgba(0, 20, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    opacity: 0.6;
    position: relative;
    overflow: hidden;
}

.achievement-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), transparent);
    opacity: 0;
    transition: var(--transition);
}

.achievement-item.unlocked {
    opacity: 1;
    border-color: var(--primary-light);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.2);
}

.achievement-item.unlocked::before {
    opacity: 1;
}

.achievement-item:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 20px rgba(0, 255, 0, 0.3);
}

.achievement-icon {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-right: clamp(10px, 2.5vw, 15px);
    min-width: clamp(35px, 8vw, 45px);
    text-align: center;
    filter: drop-shadow(0 0 5px var(--primary-color));
}

.achievement-info {
    flex: 1;
}

.achievement-title {
    font-weight: bold;
    color: var(--primary-light);
    margin-bottom: clamp(3px, 1vw, 5px);
    font-size: clamp(0.9rem, 2.5vw, 1rem);
}

.achievement-desc {
    font-size: clamp(0.7rem, 2vw, 0.8rem);
    color: var(--text-secondary);
    line-height: 1.4;
}

/* === Certificates === */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: clamp(15px, 3vw, 20px);
    margin-top: clamp(15px, 3vw, 20px);
}

.certificate-card {
    display: flex;
    align-items: center;
    padding: clamp(15px, 3vw, 20px);
    background: rgba(0, 20, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.certificate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), transparent);
    opacity: 0;
    transition: var(--transition);
}

.certificate-card:hover::before {
    opacity: 1;
}

.certificate-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 0, 0.3);
    border-color: var(--primary-light);
}

.certificate-icon {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--primary-light);
    margin-right: clamp(12px, 3vw, 18px);
    min-width: clamp(35px, 8vw, 45px);
    text-align: center;
    filter: drop-shadow(0 0 5px var(--primary-color));
}

.certificate-info {
    flex: 1;
    min-width: 0;
}

.certificate-info h4 {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--primary-light);
    margin-bottom: clamp(5px, 1vw, 8px);
    font-weight: bold;
}

.certificate-info p {
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    color: var(--text-secondary);
    margin-bottom: clamp(3px, 1vw, 5px);
}

.certificate-number {
    font-size: clamp(0.7rem, 2vw, 0.8rem);
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    word-break: break-all;
}

.certificate-actions {
    margin-left: clamp(10px, 2.5vw, 15px);
}

.certificate-btn {
    display: flex;
    align-items: center;
    gap: clamp(5px, 1vw, 8px);
    padding: clamp(8px, 2vw, 12px) clamp(12px, 3vw, 18px);
    background: linear-gradient(45deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-dark);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    font-weight: 500;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.certificate-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 255, 0, 0.4);
    background: linear-gradient(45deg, var(--primary-light), var(--primary-color));
}

.certificate-btn .material-icons {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
}

/* === No Certificates === */
.no-certificates {
    text-align: center;
    padding: clamp(30px, 6vw, 50px);
    background: rgba(0, 20, 0, 0.2);
    border-radius: var(--border-radius-sm);
    border: 1px dashed var(--border-color);
}

.no-cert-icon {
    font-size: clamp(3rem, 8vw, 4rem);
    color: var(--text-muted);
    margin-bottom: clamp(15px, 3vw, 20px);
}

.no-certificates h4 {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--text-primary);
    margin-bottom: clamp(10px, 2vw, 15px);
}

.no-certificates p {
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    color: var(--text-secondary);
    margin-bottom: clamp(20px, 4vw, 30px);
    line-height: 1.5;
}

.start-learning-btn {
    display: inline-flex;
    align-items: center;
    gap: clamp(8px, 2vw, 12px);
    padding: clamp(12px, 3vw, 18px) clamp(20px, 4vw, 30px);
    background: linear-gradient(45deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-dark);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
}

.start-learning-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 0, 0.4);
    background: linear-gradient(45deg, var(--primary-light), var(--primary-color));
}

.start-learning-btn .material-icons {
    font-size: clamp(1.1rem, 3vw, 1.3rem);
}

/* === Quick Stats === */
.quick-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: clamp(12px, 2.5vw, 18px);
    margin-top: clamp(15px, 3vw, 20px);
}

.quick-stat {
    text-align: center;
    padding: clamp(15px, 3vw, 20px);
    background: rgba(0, 20, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.quick-stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 255, 0, 0.1), transparent);
    opacity: 0;
    transition: var(--transition);
}

.quick-stat:hover::before {
    opacity: 1;
}

.quick-stat:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 0, 0.3);
    border-color: var(--primary-light);
}

.quick-stat-value {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: bold;
    color: var(--primary-light);
    text-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
    margin-bottom: clamp(5px, 1vw, 8px);
}

.quick-stat-label {
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* === Charts === */
.profile-chart-box {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: clamp(20px, 4vw, 30px);
    margin-bottom: clamp(20px, 4vw, 30px);
    box-shadow: var(--shadow-glow), var(--shadow-card);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.profile-chart-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 255, 0, 0.3);
}

.profile-chart-box h3 {
    font-size: clamp(1.1rem, 3vw, 1.3rem);
    color: var(--primary-light);
    margin-bottom: clamp(15px, 3vw, 20px);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* === Activity Calendar === */
.activity-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: clamp(3px, 1vw, 5px);
    margin-top: clamp(15px, 3vw, 20px);
}

.streak-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 20, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: clamp(0.7rem, 2vw, 0.8rem);
    color: var(--text-secondary);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.streak-cell::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 255, 0, 0.2), transparent);
    opacity: 0;
    transition: var(--transition);
}

.streak-cell.active {
    background: rgba(0, 255, 0, 0.2);
    border-color: var(--primary-light);
    color: var(--primary-light);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.3);
}

.streak-cell.active::before {
    opacity: 1;
}

.streak-cell:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.4);
}

/* === Activity List === */
.activity-list {
    margin-top: clamp(15px, 3vw, 20px);
}

.activity-item {
    display: flex;
    align-items: center;
    padding: clamp(12px, 2.5vw, 18px);
    background: rgba(0, 20, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    margin-bottom: clamp(10px, 2vw, 15px);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.activity-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 255, 0, 0.1), transparent);
    opacity: 0;
    transition: var(--transition);
}

.activity-item:hover::before {
    opacity: 1;
}

.activity-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0, 255, 0, 0.3);
    border-color: var(--primary-light);
}

.activity-icon {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-right: clamp(12px, 3vw, 18px);
    min-width: clamp(30px, 7vw, 40px);
    text-align: center;
    filter: drop-shadow(0 0 5px var(--primary-color));
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    color: var(--primary-light);
    font-weight: bold;
    margin-bottom: clamp(3px, 1vw, 5px);
}

.activity-desc {
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    color: var(--text-secondary);
    margin-bottom: clamp(2px, 0.5vw, 3px);
}

.activity-time {
    font-size: clamp(0.7rem, 2vw, 0.8rem);
    color: var(--text-muted);
    font-style: italic;
}

/* === CTF Stats === */
.ctf-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: clamp(12px, 2.5vw, 18px);
    margin-top: clamp(15px, 3vw, 20px);
}

.ctf-stat-item {
    text-align: center;
    padding: clamp(15px, 3vw, 20px);
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid rgba(0, 255, 0, 0.3);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.ctf-stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 255, 0, 0.2), transparent);
    opacity: 0;
    transition: var(--transition);
}

.ctf-stat-item:hover::before {
    opacity: 1;
}

.ctf-stat-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 0, 0.4);
    border-color: var(--primary-light);
}

.ctf-stat-value {
    display: block;
    font-size: clamp(1.3rem, 3.5vw, 1.8rem);
    font-weight: bold;
    color: var(--primary-color);
    text-shadow: 0 0 8px rgba(0, 255, 0, 0.5);
    margin-bottom: clamp(5px, 1vw, 8px);
}

.ctf-stat-label {
    display: block;
    font-size: clamp(0.7rem, 2vw, 0.8rem);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* === Select Dropdown === */
.profile-select {
    width: 100%;
    padding: clamp(10px, 2.5vw, 15px);
    background: rgba(0, 20, 0, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    transition: var(--transition);
    cursor: pointer;
    backdrop-filter: blur(5px);
}

.profile-select:hover {
    border-color: var(--primary-light);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.2);
}

.profile-select:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.3);
    background: rgba(0, 30, 0, 0.7);
}

/* === Responsive Adjustments === */
@media (max-width: 768px) {
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ctf-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .activity-calendar {
        grid-template-columns: repeat(7, 1fr);
        gap: 2px;
    }
    
    .certificate-card {
        flex-direction: column;
        text-align: center;
    }
    
    .certificate-icon {
        margin-right: 0;
        margin-bottom: clamp(10px, 2.5vw, 15px);
    }
    
    .certificate-actions {
        margin-left: 0;
        margin-top: clamp(10px, 2.5vw, 15px);
    }
}

@media (max-width: 480px) {
    .profile-stats-summary {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quick-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .ctf-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .achievement-item {
        flex-direction: column;
        text-align: center;
    }
    
    .achievement-icon {
        margin-right: 0;
        margin-bottom: clamp(8px, 2vw, 12px);
    }
    
    .activity-item {
        flex-direction: column;
        text-align: center;
    }
    
    .activity-icon {
        margin-right: 0;
        margin-bottom: clamp(8px, 2vw, 12px);
    }
}

/* === Accessibility === */
@media (prefers-reduced-motion: reduce) {
    .profile-card,
    .profile-section,
    .achievement-item,
    .certificate-card,
    .quick-stat,
    .ctf-stat-item,
    .activity-item,
    .streak-cell {
        transition: none;
    }
    
    .profile-card:hover,
    .profile-section:hover,
    .achievement-item:hover,
    .certificate-card:hover,
    .quick-stat:hover,
    .ctf-stat-item:hover,
    .activity-item:hover,
    .streak-cell:hover {
        transform: none;
    }
}

/* === High Contrast Mode === */
@media (prefers-contrast: high) {
    .profile-card,
    .profile-section {
        border-width: 3px;
        box-shadow: 0 0 0 2px var(--primary-color);
    }
    
    .profile-button,
    .certificate-btn,
    .start-learning-btn {
        border: 2px solid var(--bg-dark);
    }
}

/* === Dark Mode Support === */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-dark: #000000;
        --bg-darker: #001100;
    }
}

/* === Print Styles === */
@media print {
    .profile-layout {
        background: white;
        color: black;
    }
    
    .profile-card,
    .profile-section {
        border: 1px solid #ccc;
        box-shadow: none;
        background: white;
        color: black;
    }
    
    .profile-button,
    .certificate-btn,
    .start-learning-btn,
    .profile-logout {
        display: none;
    }
}