/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --success-color: #059669;
    --success-light: #d1fae5;
    --error-color: #dc2626;
    --error-light: #fee2e2;
    --text-color: #0f172a;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --border-color: #e2e8f0;
    --background: #ffffff;
    --background-alt: #f8fafc;
    --background-subtle: #f1f5f9;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --radius-sm: 6px;
    --radius: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.625;
    color: var(--text-color);
    background: #f8fafc;
    padding: 0;
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 20px 48px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
    overflow-x: hidden;
    box-sizing: border-box;
}

/* Header */
header {
    background: var(--background);
    padding: 20px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

body[style*="background-image"] header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

body[style*="background-image"] main {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-color);
    letter-spacing: -0.025em;
}

.header-title {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.header-title:hover {
    color: var(--primary-color);
}

.header-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin: 12px 0;
    padding: 12px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    max-width: 100%;
    overflow: hidden;
}

.app-info-header {
    flex: 1;
    min-width: 0;
}

.app-info-header p {
    color: var(--text-light);
    font-size: 0.875rem;
    margin: 0;
    line-height: 1.5;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.app-info-header strong {
    color: var(--primary-color);
    font-weight: 600;
}

.support-header {
    flex-shrink: 0;
}

.btn-coffee-small {
    display: inline-block;
    background: #008CFF;
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
}

.btn-coffee-small:hover {
    background: #0077d9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

nav {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

nav a {
    color: var(--text-light);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: var(--radius);
    transition: all 0.15s ease;
    font-weight: 500;
    font-size: 0.9375rem;
}

nav a:hover {
    background: var(--background-alt);
    color: var(--primary-color);
}

/* Main Content */
main {
    flex: 1;
    background: var(--background);
    padding: 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    max-width: 100%;
    overflow-x: hidden;
}

main>* {
    max-width: 100%;
}

/* Forms */
.form-container {
    max-width: 540px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

.form-group {
    margin-bottom: 18px;
    max-width: 100%;
}

.form-group input,
.form-group textarea {
    max-width: 100%;
    box-sizing: border-box;
}

.form-group h3 {
    margin-bottom: 14px;
    color: var(--text-color);
    font-size: 0.9375rem;
    font-weight: 600;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-color);
    font-size: 0.875rem;
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="datetime-local"],
input[type="file"],
textarea {
    width: 100%;
    padding: 9px 13px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: all 0.15s ease;
    background: var(--background);
    color: var(--text-color);
}

input[type="file"] {
    padding: 8px 13px;
    cursor: pointer;
}

input[type="file"]::file-selector-button {
    padding: 6px 14px;
    margin-right: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--background-alt);
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

input[type="file"]::file-selector-button:hover {
    background: var(--background-subtle);
    border-color: var(--text-lighter);
}

.form-text {
    display: block;
    margin-top: 6px;
    font-size: 0.8125rem;
    color: var(--text-light);
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="number"]:hover,
input[type="datetime-local"]:hover,
textarea:hover {
    border-color: var(--text-lighter);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="datetime-local"]:focus,
input[type="file"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
}

textarea {
    resize: vertical;
    min-height: 96px;
}

.checkbox-group {
    margin-bottom: 10px;
    padding: 10px 12px;
    background: var(--background-alt);
    border-radius: var(--radius);
    border: 1px solid transparent;
    transition: all 0.15s ease;
}

.checkbox-group:hover {
    border-color: var(--border-color);
    background: var(--background);
}

.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
    margin-bottom: 0;
    font-size: 0.9375rem;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 10px;
    width: 17px;
    height: 17px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

/* Buttons */
button,
.btn-primary,
.btn-secondary {
    padding: 9px 18px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary,
button[type="submit"] {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
    border: none;
}

.btn-primary:hover,
button[type="submit"]:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-md);
}

.btn-primary:active,
button[type="submit"]:active {
    transform: scale(0.98);
}

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

.btn-secondary:hover {
    background-color: var(--background-alt);
    border-color: var(--text-light);
}

.btn-danger {
    background-color: #dc2626;
    color: white;
    padding: 11px 18px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-danger:hover {
    background-color: #b91c1c;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.btn-danger:active {
    transform: translateY(0);
}

.btn-link {
    background: none;
    color: var(--primary-color);
    padding: 6px 14px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.15s ease;
    font-size: 0.9375rem;
}

.btn-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Messages */
.message {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 18px;
    font-weight: 500;
    font-size: 0.9375rem;
    border-left: 3px solid;
}

.message.success {
    background-color: var(--success-light);
    color: #065f46;
    border-left-color: var(--success-color);
}

.message.error {
    background-color: var(--error-light);
    color: #991b1b;
    border-left-color: var(--error-color);
}

/* Event Details */
.event-details {
    background: var(--background-alt);
    padding: 20px;
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.event-photo {
    margin: 16px 0;
    overflow: hidden;
    width: 100%;
    max-width: 100%;
    display: block;
}

.event-photo img {
    max-width: 100% !important;
    max-height: 400px !important;
    width: auto !important;
    height: auto !important;
    display: block !important;
    object-fit: contain !important;
}

.event-details.has-background {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
    position: relative;
    background-blend-mode: overlay;
}

.event-details h2 {
    margin-bottom: 10px;
    color: var(--text-color);
    font-size: 1.625rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.event-details h3 {
    margin-bottom: 14px;
    color: var(--text-color);
    font-size: 1.125rem;
    font-weight: 600;
}

.event-details>div {
    margin-top: 16px;
    max-width: 100%;
}

.event-details .btn {
    max-width: 100%;
}

.event-datetime {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin: 8px 0;
    font-weight: 500;
    line-height: 1.6;
}

.event-created {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 16px 0;
    padding: 12px;
    background: var(--background-alt);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 8px;
}

.event-created strong {
    color: var(--text-color);
    margin-right: 4px;
}

.created-icon {
    font-size: 1rem;
}

.event-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin: 12px 0;
}

.event-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.badge {
    background: var(--primary-color);
    color: white;
    padding: 5px 11px;
    border-radius: 14px;
    font-size: 0.8125rem;
    font-weight: 600;
}

/* Link Box */
.link-box {
    background: white;
    padding: 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    margin: 18px 0;
}

.link-box label {
    margin-bottom: 8px;
    font-size: 0.8125rem;
    color: var(--text-light);
    font-weight: 600;
}

.link-box input[type="text"] {
    margin-bottom: 10px;
    font-family: 'Courier New', monospace;
    font-size: 0.8125rem;
    background: var(--background-alt);
}

.link-box button {
    width: 100%;
}

/* Event Links */
.event-links {
    text-align: center;
    max-width: 540px;
    margin: 0 auto;
}

.event-links h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.75rem;
    font-weight: 700;
}

.event-links p {
    margin: 14px 0;
    font-size: 1rem;
}

.event-links hr {
    margin: 28px 0;
    border: none;
    border-top: 1px solid var(--border-color);
}

.success-message {
    text-align: center;
    padding: 40px 20px;
}

.success-message h3 {
    color: var(--success-color);
    font-size: 2rem;
    margin-bottom: 16px;
    font-weight: 700;
}

.success-message p {
    font-size: 1.0625rem;
    color: var(--text-light);
    margin: 10px 0;
}

/* Events Grid */
.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 18px;
    margin-top: 20px;
}

.event-card {
    background: white;
    padding: 22px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.event-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.event-card.expired {
    opacity: 0.65;
    background: var(--background-alt);
}

.event-card h3 {
    margin-bottom: 10px;
    color: var(--text-color);
    font-size: 1.25rem;
    font-weight: 700;
}

.event-card .event-datetime {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-bottom: 14px;
}

.event-card .response-count {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 16px 0;
}

.status-badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    margin: 10px 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.active {
    background: var(--success-light);
    color: #065f46;
}

.status-badge.expired {
    background: var(--error-light);
    color: #991b1b;
}

.event-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
}

.event-actions .btn-secondary,
.event-actions .btn-link {
    width: 100%;
}

/* Responses Section */
.responses-section {
    margin-top: 32px;
}

.responses-section h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.summary-box {
    background: var(--background-alt);
    padding: 22px;
    border-radius: var(--radius-lg);
    margin-bottom: 22px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    border: 1px solid var(--border-color);
}

.summary-item {
    padding: 14px;
    background: white;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--border-color);
}

.summary-item strong {
    display: block;
    color: var(--text-lighter);
    font-size: 0.75rem;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.summary-item strong::after {
    content: attr(data-value);
    display: block;
    margin-top: 8px;
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-color);
}

/* Table */
/* Responses List - Modern Card Design */
.responses-list {
    display: grid;
    gap: 16px;
    margin-top: 20px;
}

.response-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.response-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.response-card.status-in {
    border-left: 4px solid var(--success-color);
}

.response-card.status-out {
    border-left: 4px solid #dc3545;
    opacity: 0.85;
}

.response-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.response-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-icon {
    font-size: 1.25rem;
}

.response-status-badge {
    padding: 6px 14px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.response-status-badge.status-in {
    background: #d4edda;
    color: #155724;
}

.response-status-badge.status-out {
    background: #f8d7da;
    color: #721c24;
}

.response-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.response-detail {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-color);
    font-size: 0.9375rem;
}

.detail-icon {
    font-size: 1rem;
    min-width: 20px;
    line-height: 1;
    display: flex;
    align-items: center;
}

.detail-value {
    flex: 1;
    word-break: break-word;
}

.response-timestamp {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: 4px;
    font-style: italic;
}

/* Tablet - 2 columns */
@media screen and (min-width: 768px) {
    .responses-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

/* Desktop - 3 columns */
@media screen and (min-width: 1200px) {
    .responses-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Mobile adjustments */
@media screen and (max-width: 767px) {
    .response-card {
        padding: 16px;
    }

    .response-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .response-status-badge {
        align-self: flex-start;
    }

    .response-name {
        font-size: 1rem;
    }

    .response-detail,
    .response-timestamp {
        font-size: 0.875rem;
    }
}

.no-data {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-light);
    font-size: 1rem;
}

.no-data a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.no-data a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    margin-top: 32px;
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

footer p {
    margin: 0;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .container {
        padding: 12px 8px 24px;
        max-width: 100vw;
    }

    header {
        padding: 14px 12px;
        margin-bottom: 12px;
        max-width: 100%;
        box-sizing: border-box;
    }

    header h1 {
        font-size: 1.5rem;
        word-break: break-word;
    }

    .header-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        width: 100%;
        max-width: 100%;
    }

    .app-info-header {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
    }

    .app-info-header p {
        font-size: 0.75rem;
        word-break: break-word;
        hyphens: auto;
    }

    .support-header {
        width: 100%;
        max-width: 100%;
    }

    .btn-coffee-small {
        width: 100%;
        max-width: 100%;
        text-align: center;
        box-sizing: border-box;
    }

    main {
        padding: 16px 12px;
        max-width: 100%;
        box-sizing: border-box;
    }

    nav {
        flex-direction: column;
        gap: 6px;
    }

    nav a {
        text-align: center;
    }

    .events-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .summary-box {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 16px;
    }

    button,
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    .event-details h2 {
        font-size: 1.375rem;
        word-break: break-word;
    }

    .event-details {
        max-width: 100%;
        box-sizing: border-box;
        padding: 16px 12px;
    }

    .event-details>div,
    .event-details .btn {
        max-width: 100%;
        box-sizing: border-box;
    }

    .event-card h3 {
        font-size: 1.125rem;
    }

    footer {
        padding: 24px 16px 16px;
    }

    .app-info,
    .support-section {
        padding: 18px;
    }

    .btn-coffee {
        width: 100%;
        display: block;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.375rem;
    }

    main {
        padding: 18px 14px;
    }

    .event-card {
        padding: 18px;
    }

    .event-details {
        padding: 16px;
    }

    .success-message h3 {
        font-size: 1.625rem;
    }

    .event-details h2 {
        font-size: 1.25rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus visible for accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    body {
        background: white;
    }

    .container {
        max-width: 100%;
    }

    nav,
    .event-actions,
    button,
    .btn-primary,
    .btn-secondary {
        display: none;
    }
}