:root {
    --blue: #1e73be;
    --blue-dark: #165a96;
    --text: #333;
    --muted: #777;
    --border: #dcdcdc;
    --soft: #f6f9fc;
    --danger: #b91c1c;
    --danger-soft: #fef2f2;
    --danger-border: #fecaca;
}

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

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
    color: var(--text);
    background: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.5;
}

/* Nagłówek */
.topbar {
    border-bottom: 1px solid var(--border);
    background: #fff;
}

.topbar-inner,
.footer-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.topbar-inner {
    min-height: 72px;
}

.logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    line-height: 1.2;
}

.logo-name {
    font-size: 1.6rem;
    font-weight: 800;
    color: #222;
    letter-spacing: -0.02em;
}

.logo-name span {
    color: var(--blue);
}

.logo-tag {
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
}

.topbar nav,
footer nav {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
}

.topbar nav a,
footer nav a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.95rem;
}

.topbar nav a:hover,
footer nav a:hover {
    color: var(--blue);
}

.topbar nav a.active {
    color: var(--blue);
    font-weight: 600;
}

/* Główna treść */
main {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 48px 20px;
}

.container {
    width: 100%;
    max-width: 640px;
}

h1 {
    font-size: 1.7rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 28px;
}

.upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 48px 20px;
    margin-bottom: 20px;
    text-align: center;
    border: 2px dashed #b9c9da;
    border-radius: 6px;
    background: var(--soft);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}

.upload-area:hover,
.upload-area:focus-within,
.upload-area.dragover {
    border-color: var(--blue);
    background: #eaf3fb;
}

.upload-area input[type="file"] {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    width: 52px;
    height: 52px;
    color: var(--blue);
}

.choose-btn {
    display: inline-block;
    padding: 12px 34px;
    background: var(--blue);
    color: #fff;
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: 4px;
    pointer-events: none;
}

.upload-area:hover .choose-btn {
    background: var(--blue-dark);
}

.upload-area p {
    color: var(--muted);
}

/* Lista plików */
.file-list {
    list-style: none;
    max-height: 170px;
    overflow-y: auto;
}

.file-list:not(:empty) {
    margin-bottom: 20px;
}

.file-list li {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 9px 12px;
    font-size: 0.92rem;
    border: 1px solid var(--border);
    border-bottom-width: 0;
}

.file-list li:last-child {
    border-bottom-width: 1px;
}

.file-list .name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-list .size {
    color: var(--muted);
    flex-shrink: 0;
}

/* Pole opisu */
.field {
    display: block;
    margin-bottom: 20px;
}

.field span {
    display: block;
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 6px;
}

.field input {
    width: 100%;
    font: inherit;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(30, 115, 190, 0.15);
}

/* Przycisk wysyłania */
#uploadButton {
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: 4px;
    background: var(--blue);
    color: #fff;
    font: inherit;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

#uploadButton:hover:not(:disabled) {
    background: var(--blue-dark);
}

#uploadButton:focus-visible {
    outline: 3px solid rgba(30, 115, 190, 0.4);
    outline-offset: 2px;
}

#uploadButton:disabled {
    background: #c7d3df;
    cursor: not-allowed;
}

/* Postęp i błąd */
.progress-container {
    display: none;
    margin-top: 24px;
    text-align: center;
}

.progress-bar {
    height: 12px;
    background: #e6ebf0;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--blue);
    transition: width 0.3s ease;
}

.progress-container p {
    color: var(--muted);
    font-size: 0.9rem;
}

.error-message {
    display: none;
    margin-top: 24px;
    padding: 14px 16px;
    text-align: center;
    font-weight: 700;
    color: var(--danger);
    background: var(--danger-soft);
    border: 1px solid var(--danger-border);
    border-radius: 4px;
}

.error-message.show {
    display: block;
}

/* Link do pobrania po przesłaniu */
.result-container {
    display: none;
    margin-top: 10px;
    text-align: center;
}

.result-container.show {
    display: block;
}

.result-container h2 {
    font-size: 1.2rem;
    margin-bottom: 14px;
}

.link-box {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.link-box input {
    flex: 1;
    min-width: 0;
    font: inherit;
    font-size: 0.92rem;
    color: var(--text);
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--soft);
}

.link-box button {
    flex-shrink: 0;
    padding: 0 18px;
    border: none;
    border-radius: 4px;
    background: var(--blue);
    color: #fff;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.link-box button:hover {
    background: var(--blue-dark);
}

.result-info {
    color: var(--muted);
    font-size: 0.85rem;
    margin-bottom: 20px;
}

/* Stopka */
footer {
    border-top: 1px solid var(--border);
    background: var(--soft);
}

.footer-inner {
    min-height: 64px;
    padding-top: 12px;
    padding-bottom: 12px;
    font-size: 0.9rem;
    color: var(--muted);
}

footer nav a {
    font-size: 0.9rem;
    color: var(--muted);
}

@media (max-width: 600px) {
    .topbar-inner {
        padding-top: 12px;
        padding-bottom: 12px;
    }

    .upload-area {
        padding: 36px 16px;
    }

    h1 {
        font-size: 1.4rem;
    }
}

/* Podstrony: FAQ, Kontakt, Premium */
.container.page {
    max-width: 760px;
}

.lead {
    text-align: center;
    color: var(--muted);
    margin: -10px 0 28px;
}

.faq details {
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 10px;
}

.faq summary {
    cursor: pointer;
    padding: 14px 16px;
    font-weight: 600;
    list-style: none;
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.faq summary::-webkit-details-marker {
    display: none;
}

.faq summary::after {
    content: '+';
    color: var(--blue);
    font-size: 1.3rem;
    line-height: 1;
}

.faq details[open] summary::after {
    content: '–';
}

.faq details[open] {
    background: var(--soft);
    border-color: #b9c9da;
}

.faq details p {
    padding: 0 16px 16px;
    color: var(--muted);
}

.form textarea {
    width: 100%;
    font: inherit;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    outline: none;
    resize: vertical;
}

.form textarea:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(30, 115, 190, 0.15);
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 14px 20px;
    border: 2px solid var(--blue);
    border-radius: 4px;
    background: var(--blue);
    color: #fff;
    font: inherit;
    font-size: 1.05rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn:hover {
    background: var(--blue-dark);
    border-color: var(--blue-dark);
}

.btn-outline {
    background: #fff;
    color: var(--blue);
}

.btn-outline:hover {
    background: var(--soft);
    border-color: var(--blue);
}

.success-message {
    display: none;
    padding: 16px;
    text-align: center;
    font-weight: 600;
    color: #166534;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 4px;
}

.success-message.show {
    display: block;
}

.contact-info {
    margin-top: 24px;
    text-align: center;
    color: var(--muted);
}

.contact-info a {
    color: var(--blue);
}

.plans {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.plan {
    display: flex;
    flex-direction: column;
    padding: 28px 24px;
    border: 1px solid var(--border);
    border-radius: 8px;
    text-align: center;
}

.plan.highlight {
    border: 2px solid var(--blue);
    box-shadow: 0 8px 24px rgba(30, 115, 190, 0.15);
}

.plan h2 {
    font-size: 1.3rem;
}

.price {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--blue);
    margin: 8px 0 18px;
}

.plan ul {
    list-style: none;
    flex: 1;
    margin-bottom: 24px;
    text-align: left;
}

.plan li {
    padding: 8px 0 8px 26px;
    border-bottom: 1px solid #eee;
    position: relative;
}

.plan li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--blue);
    font-weight: 700;
}

/* Regulamin i polityka prywatności */
.updated {
    text-align: center;
    color: var(--muted);
    font-size: 0.9rem;
    margin: -14px 0 28px;
}

.legal h2 {
    font-size: 1.1rem;
    margin: 24px 0 6px;
}

.legal p {
    color: #555;
}

.legal a {
    color: var(--blue);
}

.error-message a {
    color: var(--danger);
    text-decoration: underline;
}

/* Logowanie */
.container.login-box {
    max-width: 420px;
}

.topbar nav a.login-link {
    padding: 7px 18px;
    border: 2px solid var(--blue);
    border-radius: 4px;
    color: var(--blue);
    font-weight: 600;
}

.topbar nav a.login-link:hover,
.topbar nav a.login-link.active {
    background: var(--blue);
    color: #fff;
}

/* Strona pobierania (/pliki/xxxxxxxx) */
.container.download-box {
    max-width: 480px;
    text-align: center;
}

.download-box .upload-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 12px;
}

.download-box h1 {
    margin-bottom: 24px;
}

.download-box .btn {
    padding: 18px 20px;
    font-size: 1.15rem;
    letter-spacing: 0.03em;
}

.download-box .details {
    color: var(--muted);
    margin-bottom: 16px;
}

.download-box .notice {
    color: var(--muted);
    font-size: 0.85rem;
    margin-top: 18px;
}