:root {
    --primary-color: #00a0e9;
    --secondary-color: #003a6c;
    --accent-bg: #f8fafc;
    --text-main: #1e293b;
    --text-sub: #64748b;
    --border-color: #e2e8f0;
    --white: #ffffff;
    --success: #10b981;
}

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

body {
    font-family: 'Inter', "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    background-color: var(--accent-bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.app-header {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 30px;
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--secondary-color);
    letter-spacing: -0.02em;
}

.logo-accent { color: var(--primary-color); }
.logo-sub { font-weight: 400; font-size: 1.2rem; color: var(--text-sub); }

.app-title-wrap h1 {
    font-size: 1.2rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.v-tag {
    font-size: 0.7rem;
    background: var(--secondary-color);
    color: #fff;
    padding: 2px 8px;
    border-radius: 99px;
}

.app-title-wrap p {
    font-size: 0.85rem;
    color: var(--text-sub);
}

/* Steps Navigation */
.steps-nav {
    background: var(--white);
    padding: 30px 0 0;
    border-bottom: 1px solid var(--border-color);
}

.steps-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    flex: 1;
    position: relative;
    opacity: 0.4;
    transition: all 0.3s;
}

.step-item.active {
    opacity: 1;
}

.step-item span {
    width: 32px;
    height: 32px;
    background: var(--accent-bg);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.step-item.active span {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 0 0 4px rgba(0, 160, 233, 0.2);
}

.step-item label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-sub);
}

.step-item.active label {
    color: var(--secondary-color);
}

.progress-bar-bg {
    height: 4px;
    background: var(--border-color);
    width: 100%;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Form Area */
.form-wrapper {
    flex: 1;
    max-width: 840px;
    width: 100%;
    margin: 40px auto 120px;
    padding: 0 20px;
}

.form-step {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

.form-step.active {
    display: block;
}

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

.step-header {
    margin-bottom: 30px;
}

.step-header h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.step-header p {
    color: var(--text-sub);
}

.form-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.group-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--secondary-color);
    border-left: 4px solid var(--primary-color);
    padding-left: 15px;
    margin-bottom: 25px;
}

/* Form Elements */
.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 10px;
}

.form-group label span {
    background: #fee2e2;
    color: #ef4444;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 10px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="date"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 160, 233, 0.1);
}

.field-hint {
    font-size: 0.8rem;
    color: var(--text-sub);
    margin-top: 6px;
}

/* Custom File Input */
.custom-file-input {
    position: relative;
    height: 80px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.custom-file-input:hover {
    background: var(--accent-bg);
    border-color: var(--primary-color);
}

.custom-file-input input {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-dummy {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    color: var(--text-sub);
}

.file-dummy i { font-size: 1.5rem; }

.img-preview {
    margin-top: 15px;
}

.img-preview img {
    max-width: 200px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/* Color Grid */
.color-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.color-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-item input[type="color"] {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none; /* 直接のクリックは無効化 */
}

.color-preview {
    flex: 1;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: 0.1em;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.color-preview:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}

.color-preview:active {
    transform: translateY(0);
}

/* List Items (Dynamic) */
.list-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 20px;
}

/* Stats Grid Special Case */
#statsList {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
}

.stat-card {
    padding: 20px !important;
    background: #fff !important;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.stat-card:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.form-grid-mini {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 10px;
}

.icon-input-group {
    display: flex;
    gap: 8px;
}

.btn-icon-select {
    background: var(--accent-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0 12px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--secondary-color);
}

.btn-icon-select:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* Icon Modal Specific */
.icon-modal-content {
    max-width: 500px !important;
    height: auto !important;
    max-height: 80vh;
}

.icon-gallery {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
    margin-top: 20px;
    max-height: 400px;
    overflow-y: auto;
    padding: 10px;
}

.icon-pick-item {
    aspect-ratio: 1;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.4rem;
    color: var(--text-sub);
    transition: all 0.2s;
}

.icon-pick-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.icon-pick-item.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.btn-remove {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 1.2rem;
}

.btn-add-item {
    width: 100%;
    padding: 15px;
    background: var(--accent-bg);
    border: 1px dashed var(--primary-color);
    color: var(--primary-color);
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-add-item:hover {
    background: var(--white);
    box-shadow: 0 4px 12px rgba(0, 160, 233, 0.15);
}

/* Footer Nav */
.app-nav {
    background: var(--white);
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    position: fixed;
    bottom: 0;
    width: 100%;
}

.nav-inner {
    max-width: 840px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-back, .btn-next {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.2s;
}

.btn-back {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-sub);
}

.btn-back:hover:not(:disabled) {
    background: var(--accent-bg);
    color: var(--secondary-color);
}

.btn-back:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-next {
    background: var(--primary-color);
    border: none;
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 160, 233, 0.2);
}

.btn-next:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 160, 233, 0.3);
}

.step-counter {
    font-weight: 800;
    color: var(--text-sub);
}

/* Final Step */
.final-card {
    text-align: center;
}

.success-icon {
    font-size: 5rem;
    color: var(--success);
    margin-bottom: 20px;
}

.btn-generate-large {
    margin-top: 30px;
    background: var(--secondary-color);
    color: #fff;
    border: none;
    padding: 20px 60px;
    border-radius: 99px;
    font-size: 1.2rem;
    font-weight: 900;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-generate-large:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 58, 108, 0.3);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.hidden { display: none !important; }

.modal-content {
    background: var(--white);
    width: 90%;
    max-width: 900px;
    height: 80vh;
    border-radius: 20px;
    padding: 40px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.modal-close {
    position: absolute;
    top: 20px; right: 20px;
    background: none; border: none; font-size: 2rem; cursor: pointer;
}

#jsonResult {
    background: #1e293b;
    color: #e2e8f0;
    padding: 20px;
    border-radius: 8px;
    overflow-y: auto;
    flex: 1;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
}

.result-actions {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.result-actions button {
    padding: 10px 20px;
    border-radius: 6px;
    border: none;
    font-weight: 700;
    cursor: pointer;
}

#copyBtn { background: var(--primary-color); color: #fff; }
#downloadBtn { background: var(--secondary-color); color: #fff; }