/* =====================================
   Shared Styles - Blockchain Apps
   ===================================== */

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --voting-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --cert-gradient: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --bg-dark: #0a0a1a;
    --bg-card: rgba(20, 20, 40, 0.8);
    --bg-hover: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-muted: #888;
    --border-color: rgba(255, 255, 255, 0.1);
    --border-glow: rgba(102, 126, 234, 0.5);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    background-image:
        radial-gradient(ellipse at top, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at bottom, rgba(118, 75, 162, 0.15) 0%, transparent 50%);
}

/* Portal Layout */
.portal {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-xl) 60px;
    text-align: center;
}

.portal-header h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    color: var(--text-muted);
    margin-bottom: var(--spacing-xl);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    max-width: 800px;
    width: 100%;
    margin: var(--spacing-xl) auto;
}

.app-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.app-card:hover {
    transform: translateY(-5px);
}

.app-card.voting:hover {
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.4);
}

.app-card.certificate:hover {
    box-shadow: 0 10px 40px rgba(17, 153, 142, 0.4);
}

.app-card.token:hover {
    box-shadow: 0 10px 40px rgba(255, 215, 0, 0.4);
}

.app-card.timestamp:hover {
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.4);
}

.app-card.badge:hover {
    box-shadow: 0 10px 40px rgba(255, 165, 0, 0.4);
}

.app-card.supplychain:hover {
    box-shadow: 0 10px 40px rgba(26, 188, 156, 0.4);
}

.app-card.explorer:hover {
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.6);
    border-color: rgba(102, 126, 234, 0.5);
}

.app-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.app-card h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.app-card p {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.app-link {
    color: #667eea;
    font-weight: 600;
    font-size: 0.875rem;
}

.portal-footer {
    margin-top: var(--spacing-xl);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* App Layout */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background: rgba(10, 10, 26, 0.9);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) 60px;
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.5rem;
}

.main {
    flex: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    width: 100%;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

/* Select dropdown options */
.form-group select option {
    background: #1a1a2e;
    color: var(--text-primary);
    padding: var(--spacing-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    width: 100%;
}

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background: var(--bg-hover);
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: #38ef7d;
}

.toast.error {
    border-color: #f45c43;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
}

/* Title hamburger icons */
.title-with-menu {
    position: relative;
    padding-left: 30px;
    display: inline-flex;
    align-items: center;
}

.title-with-menu::before {
    content: "\2630";
    /* Unicode hamburger */
    position: absolute;
    left: 0;
    font-size: 1.5rem;
    cursor: pointer;
}


/* Navigation styles */
.hamburger {
    position: fixed;
    top: var(--spacing-md);
    left: var(--spacing-md);
    width: 30px;
    height: 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    z-index: 1000;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 4px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: -260px;
    width: 260px;
    height: 100vh;
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    padding-top: 60px;
    transition: left var(--transition-normal);
    z-index: 1001;
}

.sidebar.open {
    left: 0;
}

.sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar li a {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
}

.sidebar li a:hover {
    background: var(--bg-hover);
}

/* Overlay when sidebar open */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal);
    z-index: 998;
}

.overlay.show {
    opacity: 1;
    visibility: visible;
}