@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
:root {
    --primary: #ec4899;
    --primary-dark: #db2777;
    --secondary: #4f46e5;
    --text: #111827;
    --text-light: #6b7280;
    --bg: #ffffff;
    --card-bg: #f9fafb;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 6px rgba(0,0,0,0.1);
    --transition: all 0.2s ease;
}

.font-noto {
    font-family: 'Noto Sans JP', sans-serif;
}
body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    scroll-behavior: smooth;
    font-weight: 400;
}
/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Global animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}
/* Card styles */
.card {
    background: var(--card-bg);
    border-radius: 0;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
    border: 1px solid #e5e5e5;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.subject-card, .language-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    border-radius: 16px;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    background: white;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.subject-card:hover, .language-card:hover {
    background: #f3f4f6;
    transform: translateY(-2px);
}

.subject-card i {
    transition: var(--transition);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.subject-card:hover i {
    transform: scale(1.1);
}
.subject-card::after, .language-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.subject-card:hover::after, .language-card:hover::after {
    transform: scaleX(1);
}
.language-card .flag {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.language-card:hover .flag {
    transform: scale(1.2);
}
.theme-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem;
    border-radius: 12px;
    transition: var(--transition);
    cursor: pointer;
    background: var(--card-bg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,0.05);
}

.theme-option:hover {
    background: var(--bg);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.theme-option:active {
    transform: translateY(2px);
}
.subject-card i {
    width: 40px;
    height: 40px;
    margin-bottom: 1rem;
    transition: var(--transition);
}
.subject-card:hover i {
    color: var(--primary);
    transform: rotate(10deg) scale(1.1);
}

/* Photo upload styles */
.photo-upload {
    border: 2px dashed #d1d5db;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 1rem;
}

.photo-upload:hover {
    border-color: var(--primary);
    background-color: rgba(99, 102, 241, 0.05);
}

.photo-preview {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
    margin-top: 1rem;
    display: none;
}

/* Help button styles */
.help-btn {
    position: fixed;
    bottom: 100px;
    right: 30px;
    background: var(--primary);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 90;
    cursor: pointer;
    transition: var(--transition);
}

.help-btn:hover {
    transform: scale(1.1);
    background: var(--primary-dark);
}
/* Enhanced animations */
@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(99, 102, 241, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

.pulse-animation {
    animation: pulse 2s infinite;
    position: relative;
}

/* Glass morphism effect */
.glass {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Text styles */
.text-gradient {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
/* Button styles */
.btn {
    transition: var(--transition);
    transform-origin: center;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(1px);
}
/* Section styles */
section {
    padding: 3rem 0;
    position: relative;
}

section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03), rgba(139, 92, 246, 0.03));
    z-index: -1;
    border-radius: 24px;
}