/* Reset e base - Minimal Dark Theme (ispirato a giordanistudio) */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --font-heading: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-base: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "Fira Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    
    /* Dark Mode Colors (ispirato a giordanistudio) */
    --color-primary-bg: #4a9eff;
    --color-primary-text: #ffffff;
    --color-base-bg: #1a1a1a;
    --color-base-bg-2: #252525;
    --color-base-bg-3: #2d2d2d;
    --color-base-text: #e5e5e5;
    --color-base-text-2: #b3b3b3;
    --color-border: #404040;
    --color-shadow: rgba(0, 0, 0, 0.5);
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-error: #f44336;
}

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

body {
    font-family: var(--font-base);
    background-color: var(--color-base-bg);
    color: var(--color-base-text);
    font-weight: 400;
    font-size: 18px;
    line-height: 27px;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.2s ease, color 0.2s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    letter-spacing: -0.02em;
}

h1 {
    font-weight: 700;
    font-size: 48px;
    line-height: 1.1;
}

h2 {
    font-weight: 500;
    font-size: 24px;
    line-height: 28px;
    letter-spacing: -0.2px;
}

h3 {
    font-weight: 500;
    font-size: 20px;
    line-height: 1.3;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    background: var(--color-base-bg-2);
    color: var(--color-base-text);
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar h1 {
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.navbar a {
    color: var(--color-base-text);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.navbar h1 a:hover {
    opacity: 0.8;
}

.navbar .container.navbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.nav-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 8px;
    color: var(--color-base-text-2);
    text-decoration: none;
    transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.nav-icon-btn:hover {
    color: var(--color-base-text);
    background: var(--color-base-bg-3);
    border-color: var(--color-border);
}

.nav-icon-btn.nav-icon-plus:hover {
    color: var(--color-primary-bg);
    border-color: var(--color-primary-bg);
}

.nav-icon-btn.nav-icon-funnel {
    cursor: default;
    pointer-events: none;
}

.nav-icon-btn.nav-icon-funnel.funnel-active {
    color: var(--color-success);
}

.nav-icon-btn.nav-icon-funnel.funnel-inactive {
    color: var(--color-base-text-2);
}

.nav-icon-btn.nav-icon-funnel.funnel-disabled {
    color: var(--color-base-text-2);
    opacity: 0.4;
}

.nav-icon-btn svg {
    flex-shrink: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-primary-bg);
    color: var(--color-primary-text);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    font-family: var(--font-heading);
    letter-spacing: -0.01em;
    transition: opacity 0.2s ease;
}

.btn:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: var(--color-base-bg-3);
    color: var(--color-base-text);
}

.btn-secondary:hover {
    background: #3a3a3a;
}

.btn-danger {
    background: var(--color-error);
}

.btn-warning {
    background: var(--color-warning);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-icon {
    padding: 0.5rem;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    color: var(--color-base-text-2);
}

.btn-icon:hover {
    background: var(--color-base-bg-3);
    border-color: var(--color-primary-bg);
    color: var(--color-base-text);
}

.btn-icon.active {
    background: var(--color-primary-bg);
    border-color: var(--color-primary-bg);
    color: white;
}

.btn-icon svg,
.btn-icon span svg {
    width: 20px;
    height: 20px;
    display: block;
    color: currentColor;
}

.icon-key, .icon-link, .icon-clock, .icon-mail, .icon-copy, .icon-trash,
.icon-folder, .icon-file, .icon-plus, .icon-settings, .icon-chevron-left, .icon-chevron-right, .icon-chevron-down, .icon-x {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.icon-folder svg, .icon-file svg {
    width: 48px;
    height: 48px;
    color: var(--color-primary-bg);
}

.file-browser-item-icon svg {
    width: 48px;
    height: 48px;
    color: var(--color-primary-bg);
}

/* File Browser - Stile Finder-like, area ancorata e scroll stabile */
.file-browser-wrapper {
    background: var(--color-base-bg-2);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1rem 0;
    display: flex;
    flex-direction: column;
    min-height: 320px;
}

.file-browser-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.file-browser-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-browser-path {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--color-base-text-2);
    padding: 0.5rem;
    background: var(--color-base-bg);
    border-radius: 4px;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-browser-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-height: 240px;
    max-height: 360px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.5rem 0;
    flex: 1 1 auto;
}

.file-browser-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    border: 1px solid transparent;
}

.file-browser-item:hover {
    background: var(--color-base-bg-3);
}

.file-browser-item.selected {
    background: rgba(74, 158, 255, 0.2);
    border: 1px solid var(--color-primary-bg);
}

.file-browser-item-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.file-browser-item-name {
    font-size: 14px;
    color: var(--color-base-text);
    word-break: break-word;
    flex: 1;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 12px;
    background: var(--color-base-bg-3);
    border: 1px solid var(--color-border);
    color: var(--color-base-text);
}

.btn-sm:hover {
    background: var(--color-primary-bg);
    border-color: var(--color-primary-bg);
    color: white;
}

/* Shares List */
.shares-list {
    margin-top: 2rem;
}

.share-item {
    background: var(--color-base-bg-2);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.2s ease;
}

.share-item:hover {
    border-color: var(--color-primary-bg);
}

.share-item-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    min-height: 0;
}

.share-item:hover .share-item-header {
    background: var(--color-base-bg-3);
}

.share-expand,
.share-expand-placeholder {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.share-expand {
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    color: var(--color-base-text-2);
    padding: 0;
    transition: color 0.2s ease, background 0.2s ease;
}

.share-expand:hover {
    color: var(--color-primary-bg);
    background: rgba(74, 158, 255, 0.1);
}

.share-expand .icon-chevron-right {
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: inherit;
}

.share-expand .icon-chevron-right svg {
    width: 20px;
    height: 20px;
    display: block;
    flex-shrink: 0;
    color: currentColor;
}

/* Freccia già sostituita con chevron-down in JS quando espansa */

.share-expand-placeholder {
    visibility: hidden;
    pointer-events: none;
}

.share-name {
    flex: 1;
    font-size: 18px;
    font-weight: 400;
    color: var(--color-base-text);
    font-family: var(--font-base);
    min-width: 0;
}

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

.share-status {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    font-family: var(--font-heading);
}

.share-status.active {
    background: rgba(76, 175, 80, 0.2);
    color: var(--color-success);
}

.share-status.expired {
    background: rgba(244, 67, 54, 0.2);
    color: var(--color-error);
}

.share-status.consumed {
    background: rgba(255, 152, 0, 0.2);
    color: var(--color-warning);
}

.share-status.creating {
    background: rgba(74, 158, 255, 0.2);
    color: var(--color-primary-bg);
}

/* Contenuto cartella espanso sotto la riga */
.share-item-contents {
    display: none;
    padding: 0 1.5rem 1.5rem 1.5rem;
    padding-left: calc(1.5rem + 32px);
    border-top: 1px solid var(--color-border);
    background: var(--color-base-bg);
    max-height: 280px;
    overflow-y: auto;
}

.share-item-contents[aria-hidden="false"] {
    display: block;
}

.share-contents-loading,
.share-contents-empty,
.share-contents-error {
    padding: 1rem 0;
    font-size: 14px;
    color: var(--color-base-text-2);
}

.share-contents-error {
    color: var(--color-error);
}

.share-contents-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    font-size: 14px;
    color: var(--color-base-text);
}

.share-contents-item .share-contents-name {
    flex: 1;
    min-width: 0;
}

.share-contents-item .share-contents-size {
    flex-shrink: 0;
    margin-left: auto;
}

.share-contents-item .share-contents-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.share-contents-item .share-contents-icon svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary-bg);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--color-base-bg-2);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 8px 32px var(--color-shadow);
}

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

.modal-header h3 {
    color: var(--color-base-text);
    font-size: 20px;
    font-weight: 500;
    font-family: var(--font-heading);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--color-base-text-2);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
    transition: color 0.2s ease;
    font-family: var(--font-base);
}

.modal-close:hover {
    color: var(--color-base-text);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-base-text);
    font-weight: 400;
    font-family: var(--font-base);
    font-size: 16px;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    background: var(--color-base-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-base-text);
    font-size: 16px;
    font-family: var(--font-base);
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary-bg);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

.form-control::placeholder {
    color: var(--color-base-text-2);
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

.input-group .form-control {
    flex: 1;
}

.btn-generate {
    padding: 0.75rem 1rem;
    background: var(--color-base-bg-3);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-base-text);
    cursor: pointer;
    font-size: 14px;
    font-family: var(--font-heading);
    transition: all 0.2s ease;
}

.btn-generate:hover {
    background: var(--color-primary-bg);
    border-color: var(--color-primary-bg);
    color: white;
}

.form-actions {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-base-text-2);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Settings */
.settings-section {
    background: var(--color-base-bg-2);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.settings-section h3 {
    color: var(--color-base-text);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-heading);
    font-weight: 500;
}

.volumes-list {
    margin-top: 1rem;
}

.volume-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--color-base-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    margin-bottom: 0.5rem;
}

.volume-item input {
    flex: 1;
}

.volume-item button {
    padding: 0.5rem 1rem;
    background: var(--color-error);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.volume-item button:hover {
    opacity: 0.9;
}

.add-volume-form {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.add-volume-form input {
    flex: 1;
}

/* Footer */
footer {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 1px solid var(--color-border);
}

.footer-inner {
    text-align: center;
}

.footer-tagline {
    color: var(--color-base-text-2);
    font-size: 14px;
    margin: 0 0 0.25rem 0;
}

.footer-copy {
    color: var(--color-base-text-2);
    font-size: 14px;
    margin: 0;
}

.footer-copy a {
    color: var(--color-primary-bg);
    text-decoration: none;
}

.footer-copy a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-base-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-base-bg-3);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #3a3a3a;
}

/* Code */
code {
    font-family: var(--font-mono);
    background: var(--color-base-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    color: var(--color-primary-bg);
    border: 1px solid var(--color-border);
    font-size: 14px;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    border-left: 4px solid;
    font-family: var(--font-base);
}

.alert-error {
    background: rgba(244, 67, 54, 0.1);
    border-color: var(--color-error);
    color: var(--color-error);
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

/* Page header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h2 {
    color: var(--color-base-text);
    font-family: var(--font-heading);
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .share-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .share-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .file-browser-content {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }
}