/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* === Utility classes === */
.hidden { display: none; }
.flex-spacer { flex: 1; }

/* === Base === */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: linear-gradient(135deg, #1a2332 0%, #152420 50%, #132b1e 100%);
    color: #e5e7eb;
    line-height: 1.6;
    min-height: 100vh;
}

/* === Header === */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header .logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #e5e7eb;
}

.header .logo span {
    color: #2ea043;
}

/* === Container === */
.container {
    max-width: 640px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* === Card === */
.card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 1.5rem;
}

/* === Form === */
.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: #d1d5db;
}

input[type="file"] {
    display: block;
    width: 100%;
    padding: 0.6rem;
    border: 2px dashed rgba(255,255,255,0.15);
    border-radius: 8px;
    background: rgba(255,255,255,0.08);
    cursor: pointer;
    font-size: 0.875rem;
    color: #e5e7eb;
    font-family: inherit;
}

input[type="file"]:hover {
    border-color: #2ea043;
}

input[type="file"]::file-selector-button {
    padding: 0.35rem 0.75rem;
    border: none;
    border-radius: 6px;
    background: rgba(255,255,255,0.1);
    color: #e5e7eb;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    margin-right: 0.75rem;
    font-family: inherit;
}

input[type="file"]::file-selector-button:hover {
    background: rgba(255,255,255,0.15);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: #2ea043;
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    cursor: pointer;
    font-size: 0.9rem;
    color: #d1d5db;
}

/* === Buttons === */
button {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s, transform 0.1s;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, #2ea043 0%, #238636 100%);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    opacity: 0.9;
}

.btn-primary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-secondary {
    background: rgba(46,160,67,0.15);
    color: #86efac;
    border: 1px solid rgba(46,160,67,0.3);
}

.btn-secondary:hover {
    background: rgba(46,160,67,0.25);
}

.btn-copy {
    background: rgba(255,255,255,0.08);
    color: #d1d5db;
    font-size: 0.8rem;
    padding: 0.4rem 1rem;
    border: 1px solid rgba(255,255,255,0.1);
}

.btn-copy:hover {
    background: rgba(255,255,255,0.12);
}

/* === Error banner === */
.error-banner {
    background: rgba(220,38,38,0.15);
    border: 1px solid rgba(252,165,165,0.3);
    color: #fca5a5;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    display: none;
}

/* === Loading === */
.loading {
    display: none;
    text-align: center;
    padding: 3rem 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(46,160,67,0.2);
    border-top-color: #2ea043;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading p {
    color: #9ca3af;
    font-size: 0.9rem;
}

/* === Output === */
.output {
    display: none;
}

/* === Accordion === */
.accordion-item {
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.accordion-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(255,255,255,0.03);
    cursor: pointer;
    border: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    color: #d1d5db;
    border-radius: 0;
}

.accordion-header:hover {
    background: rgba(255,255,255,0.06);
}

.accordion-arrow {
    transition: transform 0.2s;
    font-size: 0.7rem;
    color: #9ca3af;
}

.accordion-item.open .accordion-arrow {
    transform: rotate(90deg);
}

.accordion-filename {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.accordion-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.accordion-body {
    display: none;
    padding: 0 1rem 1rem;
}

.accordion-item.open .accordion-body {
    display: block;
}

.accordion-body .result-text {
    margin-top: 0.75rem;
}

.accordion-body .summary-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.summary-section .btn-item-copy {
    margin-top: 0.5rem;
}

.accordion-body .summary-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: #2ea043;
    margin-bottom: 0.5rem;
}

.btn-summarize {
    background: rgba(46,160,67,0.15);
    color: #86efac;
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
    border: 1px solid rgba(46,160,67,0.3);
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    transition: background 0.15s;
}

.btn-summarize:hover {
    background: rgba(46,160,67,0.25);
}

.btn-summarize:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-summarize.done {
    background: rgba(46,160,67,0.08);
    color: #4ade80;
    border-color: rgba(46,160,67,0.15);
    cursor: default;
}

.btn-item-copy {
    background: rgba(255,255,255,0.06);
    color: #9ca3af;
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
}

.btn-item-copy:hover {
    background: rgba(255,255,255,0.1);
    color: #d1d5db;
}

/* === Tabs === */
.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1rem;
    border-bottom: 2px solid rgba(255,255,255,0.1);
}

.tab {
    padding: 0.5rem 1.25rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-size: 0.9rem;
    font-weight: 500;
    color: #9ca3af;
    cursor: pointer;
    border-radius: 0;
    font-family: inherit;
}

.tab.active {
    color: #2ea043;
    border-bottom-color: #2ea043;
}

.tab:hover:not(.active) {
    color: #d1d5db;
}

/* === Result text === */
.result-text {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 8px;
    background: rgba(255,255,255,0.08);
    font-family: inherit;
    font-size: 0.875rem;
    line-height: 1.7;
    resize: vertical;
    color: #e5e7eb;
}

.result-text:focus {
    outline: none;
    border-color: #2ea043;
}

/* === Output actions === */
.output-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    align-items: center;
}

.copy-feedback {
    font-size: 0.8rem;
    color: #86efac;
    opacity: 0;
    transition: opacity 0.2s;
}

.copy-feedback.show {
    opacity: 1;
}

/* === Login page === */
.page-login {
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-login .card {
    max-width: 440px;
    width: 100%;
    margin: 1rem;
    padding: 2.5rem 2rem;
    text-align: center;
}

.page-login .logo {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #e5e7eb;
}

.page-login .logo span {
    color: #2ea043;
}

.page-login p {
    font-size: 1rem;
    color: #d1d5db;
    margin-bottom: 1rem;
}

.page-login .subtitle {
    font-size: 0.9rem;
    color: #9ca3af;
}

.page-login a {
    color: #2ea043;
    text-decoration: underline;
    font-size: 0.9rem;
}

.page-login a:hover {
    color: #4ade80;
}

.page-login p.link-text {
    margin-bottom: 1.5rem;
}

/* === Admin === */
h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #e5e7eb;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 1.05rem;
    font-weight: 600;
    color: #d1d5db;
    margin-bottom: 0.75rem;
}

.card + .card,
.card.admin-card {
    margin-bottom: 1.5rem;
}

.form-row {
    display: flex;
    gap: 0.5rem;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    background: rgba(255,255,255,0.08);
    color: #fff;
}

input:focus {
    outline: none;
    border-color: #2ea043;
    box-shadow: 0 0 0 2px rgba(46,160,67,0.25);
}

input::placeholder {
    color: #9ca3af;
}

.btn-delete {
    background: none;
    border: none;
    color: #9ca3af;
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    line-height: 1;
}

.btn-delete:hover {
    color: #fca5a5;
    background: rgba(220,38,38,0.15);
}

.feedback {
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    display: none;
}

.feedback.success {
    background: rgba(46,160,67,0.15);
    border: 1px solid rgba(134,239,172,0.3);
    color: #86efac;
    display: block;
}

.feedback.error {
    background: rgba(220,38,38,0.15);
    border: 1px solid rgba(252,165,165,0.3);
    color: #fca5a5;
    display: block;
}

.user-list {
    list-style: none;
}

.user-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    font-size: 0.9rem;
}

.user-list li:first-child {
    border-top: 1px solid rgba(255,255,255,0.06);
}

.user-list li span {
    color: #d1d5db;
}

.empty-state {
    color: #9ca3af;
    font-size: 0.875rem;
    font-style: italic;
}

.logout {
    display: inline-block;
    margin-top: 1rem;
    color: #2ea043;
    font-size: 0.85rem;
    cursor: pointer;
    text-decoration: underline;
    background: none;
    border: none;
    padding: 0;
    font-family: inherit;
}

.logout:hover {
    color: #4ade80;
}

.note {
    font-size: 0.8rem;
    color: #9ca3af;
    margin-top: 0.5rem;
}

.magic-link-input {
    width: 100%;
    margin-top: 4px;
    font-size: 0.75rem;
}

/* === Header help link === */
.header-help-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    color: #d1d5db;
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    border: 1px solid rgba(255,255,255,0.1);
    transition: background 0.15s, color 0.15s;
}

.header-help-link:hover {
    background: rgba(46,160,67,0.2);
    color: #2ea043;
    border-color: rgba(46,160,67,0.3);
}

/* === Help page === */
.help-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.back-link {
    display: inline-block;
    color: #2ea043;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    transition: color 0.15s;
}

.back-link:hover {
    color: #4ade80;
}

.flow-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.flow-diagram-bottom {
    margin-bottom: 2.5rem;
}

.flow-step {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 1.25rem 1rem;
    text-align: center;
    min-width: 140px;
    flex: 0 1 auto;
}

.flow-step-icon {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.flow-step-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: #e5e7eb;
    margin-bottom: 0.25rem;
}

.flow-step-desc {
    font-size: 0.75rem;
    color: #9ca3af;
}

.flow-arrow {
    font-size: 1.25rem;
    color: #2ea043;
    font-weight: 700;
    flex-shrink: 0;
}

.help-section {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.help-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #2ea043;
    margin-bottom: 0.75rem;
}

.help-section ul {
    list-style: none;
    padding: 0;
}

.help-section ul li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: #d1d5db;
    line-height: 1.6;
}

.help-section ul li::before {
    content: "\2022";
    color: #2ea043;
    font-weight: 700;
    position: absolute;
    left: 0;
}

.help-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.help-footer a {
    color: #2ea043;
    text-decoration: underline;
    font-size: 0.9rem;
}

.help-footer a:hover {
    color: #4ade80;
}

/* === Responsive === */
@media (max-width: 480px) {
    .container { padding: 1.25rem 0.75rem; }
    .header { padding: 0.75rem 1rem; }
    h1 { font-size: 1.25rem; }
    .form-row { flex-direction: column; }
    .help-container { padding: 1.25rem 0.75rem; }
    .flow-diagram { flex-direction: column; }
    .flow-arrow { transform: rotate(90deg); }
    .flow-step { min-width: unset; width: 100%; }
}