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

:root {
    --pink: #FFB6C1;
    --light-pink: #FFE4E9;
    --yellow: #FFD966;
    --light-yellow: #FFF4CC;
    --dark: #2D3748;
    --gray: #718096;
    --white: #FFFFFF;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

body.dark-mode {
    --white: #1A202C;
    --dark: #F7FAFC;
    --light-pink: #4A2C3A;
    --light-yellow: #4A3C2C;
    --gray: #CBD5E0;
}

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, var(--light-pink) 0%, var(--light-yellow) 100%);
    color: var(--dark);
    min-height: 100vh;
    transition: all 0.3s ease;
}

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.75rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--pink);
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.2rem;
    flex-wrap: nowrap;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--pink);
}

/* Nav Right — user info + controls */
.nav-right {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-shrink: 0;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--light-pink);
    padding: 0.4rem 0.8rem;
    border-radius: 50px;
}

.user-greeting {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--dark);
    white-space: nowrap;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-points {
    background: var(--yellow);
    padding: 0.25rem 0.6rem;
    border-radius: 15px;
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--dark);
    white-space: nowrap;
}

.logout-btn, .login-btn {
    background: var(--pink);
    color: white;
    border: none;
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    transition: all 0.3s;
    font-family: 'Poppins', sans-serif;
    white-space: nowrap;
}

.logout-btn:hover, .login-btn:hover {
    background: #e8a0ab;
    transform: scale(1.05);
}

.login-info {
    display: flex;
    align-items: center;
}

.theme-toggle {
    background: var(--light-pink);
    border: none;
    padding: 0.4rem 0.7rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.3s;
    flex-shrink: 0;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

/* Hero Section */
.hero {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 70vh;
}

.hero-content {
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-tagline {
    font-size: 1.5rem;
    color: var(--gray);
    margin-bottom: 2rem;
}

.cta-button {
    background: linear-gradient(135deg, var(--pink) 0%, var(--yellow) 100%);
    color: var(--white);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

/* Hero Illustration */
.hero-illustration {
    position: relative;
    height: 400px;
}

.floating-card {
    position: absolute;
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    top: 0;
    left: 0;
    animation-delay: 0s;
}

.card-2 {
    top: 0;
    right: 0;
    animation-delay: 0.5s;
}

.card-3 {
    bottom: 0;
    left: 0;
    animation-delay: 1s;
}

.card-4 {
    bottom: 0;
    right: 0;
    animation-delay: 1.5s;
}

/* Features Section */
.features {
    max-width: 1200px;
    margin: 6rem auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.feature-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* Stats Section */
.stats {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 3rem 2rem;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 2rem;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--pink) 0%, var(--yellow) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--gray);
    margin-top: 0.5rem;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    color: var(--dark);
}

.footer-subtitle {
    margin-top: 0.5rem;
    color: var(--gray);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-tagline {
        font-size: 1.2rem;
    }

    .hero-illustration {
        height: 300px;
    }

    .floating-card {
        padding: 1.5rem;
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .stats {
        flex-direction: column;
    }
}

/* Dark mode overrides */
body.dark-mode .navbar {
    background: #2D3748;
}

body.dark-mode .logo {
    color: var(--pink);
}

body.dark-mode .nav-menu a {
    color: #F7FAFC;
}

body.dark-mode .feature-card,
body.dark-mode .stats {
    background: #2D3748;
}

body.dark-mode .feature-card h3,
body.dark-mode .feature-card p {
    color: #F7FAFC;
}

body.dark-mode .hero-title {
    color: #F7FAFC;
}

body.dark-mode .hero-tagline {
    color: #CBD5E0;
}

body.dark-mode .section-title {
    color: #F7FAFC;
}

body.dark-mode .stat-label {
    color: #CBD5E0;
}

body.dark-mode .footer {
    color: #F7FAFC;
}

/* Hamburger menu for mobile */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    flex-shrink: 0;
}

.hamburger span {
    width: 22px;
    height: 2.5px;
    background: var(--dark);
    border-radius: 3px;
    transition: all 0.3s;
}

@media (max-width: 1024px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem 1.5rem;
        box-shadow: var(--shadow-lg);
        gap: 0.8rem;
        z-index: 999;
    }

    .nav-menu.open {
        display: flex;
    }

    .navbar {
        position: relative;
    }

    .nav-menu a {
        font-size: 1rem;
        padding: 0.3rem 0;
    }
}

@media (max-width: 640px) {
    .user-greeting {
        display: none;
    }

    .user-info {
        padding: 0.3rem 0.5rem;
    }

    .logo {
        font-size: 1.1rem;
    }
}
/* User Dashboard */
.user-dashboard {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.dashboard-container {
    background: var(--white);
    padding: 3rem;
    border-radius: 25px;
    box-shadow: var(--shadow-lg);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.dashboard-card {
    background: linear-gradient(135deg, var(--light-pink) 0%, var(--light-yellow) 100%);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: default;
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.daily-quiz-card {
    cursor: pointer;
    border: 2px solid transparent;
}

.daily-quiz-card:hover {
    border-color: var(--pink);
}

.dashboard-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.dashboard-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.dashboard-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--pink) 0%, var(--yellow) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.dashboard-status {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--pink);
    margin-bottom: 0.5rem;
}

.dashboard-card p {
    color: var(--gray);
    font-size: 0.9rem;
}

.dashboard-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.secondary-btn {
    background: var(--white) !important;
    color: var(--dark) !important;
    border: 2px solid var(--pink) !important;
}

.secondary-btn:hover {
    background: var(--pink) !important;
    color: var(--white) !important;
}

/* User Info in Navigation */
.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--light-pink);
    padding: 0.4rem 0.8rem;
    border-radius: 50px;
}

.user-greeting {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--dark);
    white-space: nowrap;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-points {
    background: var(--yellow);
    padding: 0.25rem 0.6rem;
    border-radius: 15px;
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--dark);
    white-space: nowrap;
}

.logout-btn, .login-btn {
    background: var(--pink);
    color: white;
    border: none;
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    transition: all 0.3s;
    font-family: 'Poppins', sans-serif;
    white-space: nowrap;
}

.logout-btn:hover, .login-btn:hover {
    background: #e8a0ab;
    transform: scale(1.05);
}

.login-info {
    display: flex;
    align-items: center;
}

/* Dark mode for new elements */
body.dark-mode .dashboard-container {
    background: #2D3748;
}

body.dark-mode .dashboard-card h3,
body.dark-mode .dashboard-card p {
    color: #F7FAFC;
}

body.dark-mode .user-info {
    background: #4A2C3A;
}

body.dark-mode .user-greeting {
    color: #F7FAFC;
}

body.dark-mode .user-points {
    background: #5A4A1C;
    color: #F7FAFC;
}

@media (max-width: 768px) {
    .dashboard-container {
        padding: 2rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-actions {
        flex-direction: column;
    }

    .nav-right {
        gap: 0.4rem;
    }
}