/* Dark Glassmorphism Theme - Shared Styles */

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

:root {
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-hover: rgba(255, 255, 255, 0.06);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.4);
    --accent: rgba(255, 255, 255, 0.1);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: #0f0f0f;
    color: var(--text-primary);
    overflow: hidden;
    position: relative;
}

/* Subtle Background Orbs */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -2;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.015) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.008) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.01) 0%, transparent 50%);
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    background: 
        radial-gradient(circle at 60% 70%, rgba(255, 255, 255, 0.008) 0%, transparent 50%),
        radial-gradient(circle at 90% 10%, rgba(255, 255, 255, 0.006) 0%, transparent 50%),
        radial-gradient(circle at 10% 90%, rgba(255, 255, 255, 0.009) 0%, transparent 50%);
}

/* Subtle floating orbs */
.floating-orbs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -3;
    overflow: hidden;
}

.floating-orb {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.015);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.03);
    animation: subtleFloat 50s ease-in-out infinite;
}

.floating-orb:nth-child(1) {
    width: 250px;
    height: 250px;
    top: -15%;
    left: -20%;
    animation-delay: 0s;
    animation-duration: 55s;
}

.floating-orb:nth-child(2) {
    width: 180px;
    height: 180px;
    top: 45%;
    right: -15%;
    animation-delay: 20s;
    animation-duration: 60s;
}

.floating-orb:nth-child(3) {
    width: 130px;
    height: 130px;
    bottom: -10%;
    left: 35%;
    animation-delay: 40s;
    animation-duration: 50s;
}

@keyframes subtleFloat {
    0%, 100% {
        transform: translateY(0px) translateX(0px);
        opacity: 0.2;
    }
    50% {
        transform: translateY(-20px) translateX(15px);
        opacity: 0.05;
    }
}

/* Glass Morphism Base */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-glass);
}

/* Header Styles - Compact and Modern */
header {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    padding: 8px 20px;
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
    min-height: 44px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.header-center {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
}

.header-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex: 1;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.06) 50%, 
        transparent 100%
    );
    opacity: 0.4;
}

h1 {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin: 0;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.header-subtitle {
    font-size: 11px;
    font-weight: 400;
    color: var(--text-secondary);
    opacity: 0.8;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.learn-link {
    background: rgba(255, 255, 255, 0.025);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 11px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    font-weight: 400;
    position: relative;
    overflow: hidden;
}

.learn-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.03), transparent);
    transition: left 0.5s ease;
}

.learn-link:hover::before {
    left: 100%;
}

.learn-link:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.1);
}

.learn-link svg {
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.4));
}

/* Compact Authentication Styles */
.auth-section {
    display: flex;
    align-items: center;
}

.auth-btn-compact {
    background: rgba(255, 255, 255, 0.025);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.auth-btn-compact:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.1);
}

.user-profile-compact {
    display: flex;
    align-items: center;
    position: relative;
}

.user-avatar-btn {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    padding: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    width: 32px;
    height: 32px;
}

.user-avatar-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.12);
}

.user-avatar-compact {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* User Menu Positioning for Compact Layout */
.user-profile-compact .user-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 8px;
    min-width: 220px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

.user-profile-compact .user-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Responsive Styles */
@media (max-width: 768px) {
    header {
        padding: 6px 12px;
        min-height: 38px;
    }
    
    h1 {
        font-size: 14px;
    }
    
    .header-subtitle {
        font-size: 10px;
    }
    
    .learn-link {
        font-size: 10px;
        padding: 5px 8px;
    }
    
    .header-left {
        gap: 6px;
    }
    
    .floating-orb {
        transform: scale(0.5);
    }
    
    .user-avatar-btn {
        width: 28px;
        height: 28px;
        padding: 6px;
    }
    
    .auth-btn-compact {
        padding: 6px;
    }
}