:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #10b981;
    --background-color: #f3f4f6;
    --surface-color: #ffffff;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --error-color: #ef4444;
    --success-color: #10b981;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 0.5rem;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-logo: 'Orbitron', sans-serif;
}

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Zen+Maru+Gothic:wght@400;500;700;900&display=swap');

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

body {
    font-family: var(--font-sans);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography & Logo */
.logo-text {
    font-family: 'Zen Maru Gothic', sans-serif;
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 8px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    display: inline-block;
    position: relative;
    animation: logoFloat 4s ease-in-out infinite;
    text-shadow: none;
}

.logo-text::after {
    content: 'セラポン';
    position: absolute;
    left: 0;
    top: 0;
    z-index: -1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: blur(15px);
    opacity: 0.6;
}

.logo-version {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 3px;
    background: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    vertical-align: middle;
    margin-left: 0.5rem;
    padding: 0.25rem 0.75rem;
    border: 2px solid rgba(0, 210, 255, 0.3);
    border-radius: 20px;
}

@keyframes logoFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    flex: 1;
}

.login-container {
    background: var(--surface-color);
    padding: 2.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #374151;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: border-color 0.15s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.btn-primary {
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.error-message {
    background-color: #fef2f2;
    color: var(--error-color);
    padding: 0.75rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.success-message {
    background-color: #ecfdf5;
    color: #047857;
    padding: 0.75rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Main App (index.php) */
.app-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: var(--surface-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.app-header {
    margin-bottom: 2rem;
}

.app-header h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.app-logo {
    max-width: 100%;
    width: 250px;
    height: auto;
    margin-bottom: 1rem;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.pickup-section {
    margin-bottom: 2rem;
    padding: 2rem;
    background: #f9fafb;
    border-radius: var(--radius);
    border: 1px dashed var(--border-color);
}

.image-display {
    margin-top: 2rem;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f3f4f6;
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
}

.image-display img {
    max-width: 100%;
    max-height: 500px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.action-buttons {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.btn-secondary:hover {
    background-color: #059669;
}

.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* ========================================= */
/* Gachapon Animation                        */
/* ========================================= */
.gachapon-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    display: none;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(8px);
}

.gachapon-overlay.active {
    display: flex;
}

.gacha-machine {
    position: relative;
    width: 300px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.capsule {
    width: 150px;
    height: 150px;
    position: relative;
    border-radius: 50%;
    box-shadow:
        inset -8px -8px 20px rgba(0, 0, 0, 0.3),
        inset 8px 8px 20px rgba(255, 255, 255, 0.2),
        0 15px 35px rgba(0, 0, 0, 0.4),
        0 5px 15px rgba(0, 0, 0, 0.2);
    transform: translateY(-500px);
    overflow: visible;
    border: 3px solid rgba(0, 0, 0, 0.2);
}

.capsule.drop {
    animation: dropCapsule 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.capsule.shake {
    animation: shakeCapsule 0.5s ease-in-out infinite;
}

.capsule.open {
    animation: openCapsule 0.5s ease-out forwards;
}

.capsule-top {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
    border-bottom: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 150px 150px 0 0;
    overflow: hidden;
}

/* Add shine effect to top */
.capsule-top::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 20%;
    width: 40%;
    height: 30%;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0.2) 40%, transparent 70%);
    border-radius: 50%;
    transform: rotate(-30deg);
}

/* Add inner shadow to top */
.capsule-top::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.2));
}

.capsule-bottom {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%);
    border-radius: 0 0 150px 150px;
    overflow: hidden;
}

/* Add inner shadow to bottom */
.capsule-bottom::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(to top, transparent, rgba(0, 0, 0, 0.15));
}

/* Add subtle shine to bottom */
.capsule-bottom::after {
    content: '';
    position: absolute;
    bottom: 15%;
    left: 25%;
    width: 35%;
    height: 25%;
    background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.3) 0%, transparent 60%);
    border-radius: 50%;
}

/* ========================================= */
/* Gacha Capsule Color Variants              */
/* ========================================= */

/* Variant 1: Classic Red-White (Default) */
.capsule.variant-1 .capsule-top {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
}

.capsule.variant-1 .capsule-bottom {
    background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%);
}

/* Variant 2: Ultra Ball (Yellow-Black) */
.capsule.variant-2 .capsule-top {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
}

.capsule.variant-2 .capsule-bottom {
    background: linear-gradient(135deg, #374151 0%, #1f2937 100%);
}

.capsule.variant-2 .capsule-line {
    background: linear-gradient(to bottom,
            #b45309 0%,
            #d97706 25%,
            #f59e0b 50%,
            #d97706 75%,
            #b45309 100%);
}

/* Variant 3: Master Ball (Purple-Pink) */
.capsule.variant-3 .capsule-top {
    background: linear-gradient(135deg, #c084fc 0%, #a855f7 100%);
    position: relative;
}

/* Add 'M' letter to Master Ball */
.capsule.variant-3 .capsule-top::before {
    content: 'M';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 36px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.7);
    text-shadow:
        0 2px 4px rgba(0, 0, 0, 0.3),
        0 0 10px rgba(255, 255, 255, 0.5);
    font-family: 'Arial Black', sans-serif;
    z-index: 5;
}

/* Override the shine for variant-3 to not conflict with M */
.capsule.variant-3 .capsule-top::after {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.2));
}

.capsule.variant-3 .capsule-bottom {
    background: linear-gradient(135deg, #f9a8d4 0%, #ec4899 100%);
}

.capsule.variant-3 .capsule-line {
    background: linear-gradient(to bottom,
            #c026d3 0%,
            #e879f9 25%,
            #f0abfc 50%,
            #e879f9 75%,
            #c026d3 100%);
}

/* Variant 4: Great Ball (Blue-Red) */
.capsule.variant-4 .capsule-top {
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    position: relative;
}

/* Add red stripes to Great Ball */
.capsule.variant-4 .capsule-top::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 4px;
    background: linear-gradient(90deg,
            transparent 0%,
            #ef4444 10%,
            #dc2626 50%,
            #ef4444 90%,
            transparent 100%);
    box-shadow:
        0 -15px 0 0 rgba(239, 68, 68, 0.6),
        0 15px 0 0 rgba(239, 68, 68, 0.6);
    border-radius: 2px;
    z-index: 5;
}

/* Override the shine for variant-4 */
.capsule.variant-4 .capsule-top::after {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.2));
}

.capsule.variant-4 .capsule-bottom {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
}

.capsule.variant-4 .capsule-line {
    background: linear-gradient(to bottom,
            #1e3a8a 0%,
            #1e40af 25%,
            #3b82f6 50%,
            #1e40af 75%,
            #1e3a8a 100%);
}

/* Variant 5: Safari Ball (Green-Beige) */
.capsule.variant-5 .capsule-top {
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
}

.capsule.variant-5 .capsule-bottom {
    background: linear-gradient(135deg, #fde68a 0%, #fcd34d 100%);
}

.capsule.variant-5 .capsule-line {
    background: linear-gradient(to bottom,
            #047857 0%,
            #059669 25%,
            #10b981 50%,
            #059669 75%,
            #047857 100%);
}

/* Variant 6: Dive Ball (Cyan-Blue) */
.capsule.variant-6 .capsule-top {
    background: linear-gradient(135deg, #22d3ee 0%, #06b6d4 100%);
}

.capsule.variant-6 .capsule-bottom {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
}

.capsule.variant-6 .capsule-line {
    background: linear-gradient(to bottom,
            #0e7490 0%,
            #0891b2 25%,
            #06b6d4 50%,
            #0891b2 75%,
            #0e7490 100%);
}

/* Variant 7: Dusk Ball (Dark Green-Black) */
.capsule.variant-7 .capsule-top {
    background: linear-gradient(135deg, #6ee7b7 0%, #10b981 100%);
}

.capsule.variant-7 .capsule-bottom {
    background: linear-gradient(135deg, #4b5563 0%, #1f2937 100%);
}

.capsule.variant-7 .capsule-line {
    background: linear-gradient(to bottom,
            #065f46 0%,
            #047857 25%,
            #059669 50%,
            #047857 75%,
            #065f46 100%);
}

/* Variant 8: Love Ball (Pink-White) */
.capsule.variant-8 .capsule-top {
    background: linear-gradient(135deg, #fda4af 0%, #fb7185 100%);
}

.capsule.variant-8 .capsule-bottom {
    background: linear-gradient(135deg, #fce7f3 0%, #fbcfe8 100%);
}

.capsule.variant-8 .capsule-line {
    background: linear-gradient(to bottom,
            #ec4899 0%,
            #f472b6 25%,
            #f9a8d4 50%,
            #f472b6 75%,
            #ec4899 100%);
}

/* ========================================= */
/* Additional Pokeball Variants (9-16)       */
/* ========================================= */

/* Variant 9: Timer Ball (Black-Orange-White) */
.capsule.variant-9 .capsule-top {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    position: relative;
}

/* Add orange clock-like marks */
.capsule.variant-9 .capsule-top::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50%;
    height: 50%;
    background:
        linear-gradient(0deg, transparent 48%, #f97316 48%, #f97316 52%, transparent 52%),
        linear-gradient(90deg, transparent 48%, #f97316 48%, #f97316 52%, transparent 52%);
    opacity: 0.7;
    z-index: 5;
}

.capsule.variant-9 .capsule-top::after {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.3));
}

.capsule.variant-9 .capsule-bottom {
    background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%);
}

.capsule.variant-9 .capsule-line {
    background: linear-gradient(to bottom,
            #c2410c 0%,
            #ea580c 25%,
            #f97316 50%,
            #ea580c 75%,
            #c2410c 100%);
}

/* Variant 10: Quick Ball (Blue-Yellow) */
.capsule.variant-10 .capsule-top {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.capsule.variant-10 .capsule-bottom {
    background: linear-gradient(135deg, #fef08a 0%, #fde047 100%);
}

.capsule.variant-10 .capsule-line {
    background: linear-gradient(to bottom,
            #1e3a8a 0%,
            #1e40af 25%,
            #3b82f6 50%,
            #1e40af 75%,
            #1e3a8a 100%);
}

/* Variant 11: Repeat Ball (Red-Yellow-Black) */
.capsule.variant-11 .capsule-top {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    position: relative;
}

/* Add repeat arrows pattern */
.capsule.variant-11 .capsule-top::before {
    content: '⟲';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 32px;
    color: rgba(239, 68, 68, 0.6);
    z-index: 5;
}

.capsule.variant-11 .capsule-top::after {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.2));
}

.capsule.variant-11 .capsule-bottom {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
}

.capsule.variant-11 .capsule-line {
    background: linear-gradient(to bottom,
            #b91c1c 0%,
            #dc2626 25%,
            #ef4444 50%,
            #dc2626 75%,
            #b91c1c 100%);
}

/* Variant 12: Luxury Ball (Black-Gold) */
.capsule.variant-12 .capsule-top {
    background: linear-gradient(135deg, #1f2937 0%, #0f172a 100%);
    position: relative;
}

/* Add gold accent */
.capsule.variant-12 .capsule-top::before {
    content: '';
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg,
            transparent 0%,
            #fbbf24 20%,
            #fcd34d 50%,
            #fbbf24 80%,
            transparent 100%);
    box-shadow:
        0 -8px 0 0 rgba(251, 191, 36, 0.5),
        0 8px 0 0 rgba(251, 191, 36, 0.5);
    z-index: 5;
}

.capsule.variant-12 .capsule-top::after {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.3));
}

.capsule.variant-12 .capsule-bottom {
    background: linear-gradient(135deg, #1f2937 0%, #0f172a 100%);
}

.capsule.variant-12 .capsule-line {
    background: linear-gradient(to bottom,
            #a16207 0%,
            #ca8a04 25%,
            #eab308 50%,
            #ca8a04 75%,
            #a16207 100%);
}

/* Variant 13: Premier Ball (White-Red) */
.capsule.variant-13 .capsule-top {
    background: linear-gradient(135deg, #ffffff 0%, #f9fafb 100%);
    position: relative;
}

/* Add red marking */
.capsule.variant-13 .capsule-top::before {
    content: '';
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 6px;
    background: linear-gradient(90deg,
            transparent 0%,
            #ef4444 20%,
            #dc2626 50%,
            #ef4444 80%,
            transparent 100%);
    border-radius: 3px;
    z-index: 5;
}

.capsule.variant-13 .capsule-top::after {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.1));
}

.capsule.variant-13 .capsule-bottom {
    background: linear-gradient(135deg, #ffffff 0%, #f9fafb 100%);
}

.capsule.variant-13 .capsule-line {
    background: linear-gradient(to bottom,
            #b91c1c 0%,
            #dc2626 25%,
            #ef4444 50%,
            #dc2626 75%,
            #b91c1c 100%);
}

/* Variant 14: Net Ball (Cyan-Black) */
.capsule.variant-14 .capsule-top {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    position: relative;
}

/* Add net pattern */
.capsule.variant-14 .capsule-top::before {
    content: '⊞';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 36px;
    color: rgba(0, 0, 0, 0.3);
    z-index: 5;
}

.capsule.variant-14 .capsule-top::after {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.2));
}

.capsule.variant-14 .capsule-bottom {
    background: linear-gradient(135deg, #374151 0%, #1f2937 100%);
}

.capsule.variant-14 .capsule-line {
    background: linear-gradient(to bottom,
            #155e75 0%,
            #0e7490 25%,
            #06b6d4 50%,
            #0e7490 75%,
            #155e75 100%);
}

/* Variant 15: Dream Ball (Pink-Purple) */
.capsule.variant-15 .capsule-top {
    background: linear-gradient(135deg, #f9a8d4 0%, #f472b6 100%);
    position: relative;
}

/* Add dreamy star pattern */
.capsule.variant-15 .capsule-top::before {
    content: '✦';
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 28px;
    color: rgba(255, 255, 255, 0.8);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
    z-index: 5;
}

.capsule.variant-15 .capsule-top::after {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.15));
}

.capsule.variant-15 .capsule-bottom {
    background: linear-gradient(135deg, #c084fc 0%, #a855f7 100%);
}

.capsule.variant-15 .capsule-line {
    background: linear-gradient(to bottom,
            #a21caf 0%,
            #c026d3 25%,
            #d946ef 50%,
            #c026d3 75%,
            #a21caf 100%);
}

/* Variant 16: Beast Ball (Blue-Yellow-Black) */
.capsule.variant-16 .capsule-top {
    background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
    position: relative;
}

/* Add futuristic pattern */
.capsule.variant-16 .capsule-top::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    width: 40%;
    height: 40%;
    border: 3px solid rgba(234, 179, 8, 0.7);
    border-radius: 8px;
    z-index: 5;
}

.capsule.variant-16 .capsule-top::after {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.3));
}

.capsule.variant-16 .capsule-bottom {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
}

.capsule.variant-16 .capsule-line {
    background: linear-gradient(to bottom,
            #a16207 0%,
            #ca8a04 25%,
            #eab308 50%,
            #ca8a04 75%,
            #a16207 100%);
}

.capsule-line {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 12px;
    background: linear-gradient(to bottom,
            #1f2937 0%,
            #374151 25%,
            #4b5563 50%,
            #374151 75%,
            #1f2937 100%);
    box-shadow:
        0 2px 5px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(0, 0, 0, 0.3);
    z-index: 10;
}

/* Large center button */
.capsule-line::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background:
        radial-gradient(circle at 30% 30%,
            rgba(255, 255, 255, 0.9) 0%,
            rgba(240, 240, 240, 0.8) 20%,
            rgba(200, 200, 200, 0.7) 50%,
            rgba(150, 150, 150, 0.6) 100%);
    border-radius: 50%;
    border: 4px solid #1f2937;
    box-shadow:
        0 4px 8px rgba(0, 0, 0, 0.4),
        inset -3px -3px 6px rgba(0, 0, 0, 0.3),
        inset 3px 3px 6px rgba(255, 255, 255, 0.4),
        0 0 0 2px rgba(100, 116, 139, 0.5);
    z-index: 15;
}

/* Inner circle detail on button */
.capsule-line::after {
    content: 'セ';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 28px;
    height: 28px;
    background:
        radial-gradient(circle at 35% 35%,
            rgba(255, 255, 255, 0.6) 0%,
            rgba(220, 220, 220, 0.5) 30%,
            rgba(180, 180, 180, 0.4) 70%,
            rgba(140, 140, 140, 0.3) 100%);
    border-radius: 50%;
    border: 2px solid rgba(0, 0, 0, 0.2);
    box-shadow:
        inset -2px -2px 4px rgba(0, 0, 0, 0.2),
        inset 2px 2px 4px rgba(255, 255, 255, 0.3);
    z-index: 20;
    /* Golden text styling */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    font-weight: 900;
    font-family: 'Zen Maru Gothic', sans-serif;
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #d97706 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow:
        0 1px 2px rgba(0, 0, 0, 0.3),
        0 0 5px rgba(251, 191, 36, 0.5);
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3)) drop-shadow(0 0 3px rgba(251, 191, 36, 0.6));
}

@keyframes dropCapsule {
    0% {
        transform: translateY(-500px) rotate(0deg);
    }

    60% {
        transform: translateY(20px) rotate(360deg);
    }

    80% {
        transform: translateY(-10px) rotate(360deg);
    }

    100% {
        transform: translateY(0) rotate(360deg);
    }
}

@keyframes shakeCapsule {
    0% {
        transform: rotate(360deg) translateX(0);
    }

    25% {
        transform: rotate(355deg) translateX(-5px);
    }

    75% {
        transform: rotate(365deg) translateX(5px);
    }

    100% {
        transform: rotate(360deg) translateX(0);
    }
}

@keyframes openCapsule {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }

    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* ========================================= */
/* Admin Dashboard Layout                    */
/* ========================================= */
.dashboard-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background-color: #1e1b4b;
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
    box-shadow: 4px 0 10px rgba(0, 0, 0, 0.1);
}

.sidebar-header {
    padding: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    font-family: var(--font-logo);
    font-size: 1.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    flex: 1;
    padding: 2rem 1rem;
    list-style: none;
}

.nav-item {
    margin-bottom: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: #c7d2fe;
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s;
    font-weight: 500;
    cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-link svg {
    width: 20px;
    height: 20px;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.logout-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #fca5a5;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.logout-link:hover {
    color: #ef4444;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    background-color: #f3f4f6;
    padding: 2rem;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.content-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.content-section.active {
    display: block;
}

.card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1f2937;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table th {
    background-color: #f9fafb;
    color: #4b5563;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: #374151;
    background-color: white;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover td {
    background-color: #f9fafb;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .form-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.form-actions {
    margin-top: 1.5rem;
    display: flex;
    justify-content: flex-end;
}

.admin-form-group {
    margin-bottom: 1rem;
}

.admin-form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.admin-input,
.admin-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all 0.2s;
    background-color: white;
}

.admin-input:focus,
.admin-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    outline: none;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background-color: #f9fafb;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: #eff6ff;
}

.upload-icon {
    width: 48px;
    height: 48px;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-error {
    background-color: #fee2e2;
    color: #991b1b;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle svg {
    width: 24px;
    height: 24px;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 90;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* ========================================= */
/* Mobile Responsiveness                     */
/* ========================================= */
@media (max-width: 768px) {

    .login-container,
    .app-container {
        width: 95%;
        padding: 1.5rem;
        margin: 1rem auto;
    }

    .app-header h1 {
        font-size: 1.5rem;
    }

    .logo-text {
        font-size: 2rem;
        letter-spacing: 4px;
    }

    .logo-version {
        font-size: 0.7rem;
        padding: 0.2rem 0.5rem;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        width: 260px;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
        width: 100%;
    }

    .menu-toggle {
        display: block;
        margin-right: 1rem;
    }

    .top-bar {
        justify-content: flex-start;
    }

    .page-title {
        font-size: 1.25rem;
        margin-right: auto;
    }

    .user-profile span {
        display: none;
    }

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

    .table-responsive {
        border: 1px solid var(--border-color);
        border-radius: var(--radius);
    }

    .data-table th,
    .data-table td {
        padding: 0.75rem 0.5rem;
        font-size: 0.8125rem;
    }

    .upload-area {
        padding: 1.5rem;
    }

    .action-buttons {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.95);
        padding: 1rem;
        box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
        z-index: 50;
        backdrop-filter: blur(5px);
        border-top: 1px solid var(--border-color);
        margin-top: 0;
    }

    .app-container {
        padding-bottom: 80px;
    }
}