/* ==========================================
   Variables & Reset
   ========================================== */
:root {
    /* Pop Art Colors */
    --pop-pink: #FF1493;
    --pop-magenta: #E91E63;
    --pop-cyan: #00CED1;
    --pop-teal: #20B2AA;
    --pop-yellow: #FFD700;
    --pop-orange: #FF6B35;
    --pop-purple: #9D4EDD;
    --pop-blue: #4169E1;
    
    --text-dark: #1a1a2e;
    --text-light: #4a5568;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    
    --gradient-primary: linear-gradient(135deg, #FF1493 0%, #9D4EDD 50%, #4169E1 100%);
    --gradient-vibrant: linear-gradient(45deg, #FF1493, #FFD700, #00CED1, #9D4EDD);
    
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-secondary: 'Outfit', 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    
    --transition-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.7;
    background: linear-gradient(180deg, var(--white) 0%, var(--bg-light) 100%);
    min-height: 100vh;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--text-dark);
    text-decoration: none;
    letter-spacing: 1px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientFlow 3s linear infinite;
}

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

.back-link {
    font-family: var(--font-secondary);
    font-weight: 600;
    color: var(--text-dark);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-normal);
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

.back-link:hover {
    color: var(--pop-magenta);
    background: rgba(255, 20, 147, 0.1);
    transform: translateX(-5px);
}

/* ==========================================
   Contact Form Section
   ========================================== */
.contact-form-section {
    padding: calc(80px + var(--spacing-lg)) 0 var(--spacing-lg);
    min-height: calc(100vh - 100px);
}

.form-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: inline-block;
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--pop-cyan);
    margin-bottom: var(--spacing-sm);
}

.form-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    background: var(--gradient-vibrant);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientFlow 5s linear infinite;
    margin-bottom: var(--spacing-sm);
}

.form-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* ==========================================
   Form Container
   ========================================== */
.form-container {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(255, 20, 147, 0.15);
    position: relative;
    overflow: hidden;
}

.form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--gradient-vibrant);
    background-size: 200% auto;
    animation: gradientFlow 3s linear infinite;
}

.form-container::after {
    content: '';
    position: absolute;
    inset: -3px;
    background: var(--gradient-vibrant);
    border-radius: 20px;
    z-index: -1;
    opacity: 0.2;
}

/* ==========================================
   Form Elements
   ========================================== */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-group label i {
    color: var(--pop-magenta);
}

.required {
    color: var(--pop-pink);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--pop-magenta);
    box-shadow: 0 0 0 3px rgba(255, 20, 147, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-group select {
    cursor: pointer;
}

/* ==========================================
   Submit Button
   ========================================== */
.form-actions {
    margin-top: var(--spacing-md);
}

.submit-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    padding: 1rem 2.5rem;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50px;
    font-family: var(--font-secondary);
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 10px 30px rgba(255, 20, 147, 0.4);
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.submit-btn:hover::before {
    width: 300px;
    height: 300px;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255, 20, 147, 0.5);
}

.submit-btn:active {
    transform: translateY(-1px);
}

.submit-btn i {
    position: relative;
    z-index: 1;
}

/* ==========================================
   Form Status
   ========================================== */
.form-status {
    margin-top: var(--spacing-md);
    padding: 1rem;
    border-radius: 12px;
    font-weight: 600;
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
    border: 2px solid #22c55e;
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    border: 2px solid #ef4444;
}

/* ==========================================
   Contact Info
   ========================================== */
.contact-info {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(255, 20, 147, 0.05), rgba(0, 206, 209, 0.05));
    border-radius: 15px;
    border: 2px solid rgba(255, 20, 147, 0.1);
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    font-size: 1rem;
}

.info-item i {
    color: var(--pop-magenta);
    font-size: 1.2rem;
}

.info-item a {
    color: var(--pop-cyan);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.info-item a:hover {
    color: var(--pop-magenta);
}

.response-note {
    margin-top: var(--spacing-sm);
    padding: 0.8rem;
    background: rgba(255, 215, 0, 0.1);
    border-left: 4px solid var(--pop-yellow);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.response-note i {
    color: var(--pop-yellow);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: var(--spacing-md) 0;
    text-align: center;
    margin-top: var(--spacing-lg);
}

.footer-content p {
    font-size: 0.95rem;
    opacity: 0.7;
}

/* ==========================================
   Animations
   ========================================== */
[data-animation] {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

[data-animation]:nth-child(2) {
    animation-delay: 0.2s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .form-container {
        padding: var(--spacing-md);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .submit-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .contact-form-section {
        padding: calc(120px + var(--spacing-md)) 0 var(--spacing-md);
    }

    .form-title {
        font-size: clamp(2rem, 6vw, 3rem) !important;
    }

    .form-subtitle {
        font-size: 0.95rem;
    }

    .form-container {
        padding: var(--spacing-sm) var(--spacing-sm);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }

    .submit-btn {
        padding: 0.9rem 2rem;
        font-size: 1rem;
    }
}