/* Modal "Cargar Proyecto" compartido por index.html y base.html.
   Todo va dentro de .upload-modal para no chocar con los estilos de cada página.
   Los colores usan las variables de la página si existen; si no, el valor por defecto. */

dialog.upload-modal {
    --um-bg-primary: var(--bg-primary, #0a192f);
    --um-bg-secondary: var(--bg-secondary, #112240);
    --um-border: var(--border, #233554);
    --um-text-main: var(--text-main, #e6f1ff);
    --um-text-muted: var(--text-muted, #8892b0);
    --um-accent: var(--accent, #00d2ff);
    --um-accent-glow: var(--accent-glow, rgba(0, 210, 255, 0.2));
    --um-danger: var(--danger, #ff6b6b);
    --um-success: var(--success, #4edf7a);

    margin: auto;
    border: 1px solid var(--um-border);
    border-radius: 16px;
    background-color: var(--um-bg-secondary);
    color: var(--um-text-main);
    width: min(560px, calc(100% - 2rem));
    max-height: calc(100vh - 2rem);
    padding: 0;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
}
dialog.upload-modal *,
dialog.upload-modal *::before,
dialog.upload-modal *::after { box-sizing: border-box; }

dialog.upload-modal::backdrop {
    background-color: rgba(2, 8, 20, 0.75);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
dialog.upload-modal[open] { animation: um-modal-in 0.25s ease-out; }
@keyframes um-modal-in {
    from { opacity: 0; transform: translateY(16px) scale(0.98); }
    to { opacity: 1; transform: none; }
}

.upload-modal .sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.upload-modal .modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.75rem 1.75rem 0;
}
.upload-modal .modal-header h2 { font-size: 1.5rem; margin: 0; }
.upload-modal .modal-header p { color: var(--um-text-muted); font-size: 0.92rem; margin: 0.25rem 0 0; }

.upload-modal .modal-close {
    background: none;
    border: 1px solid var(--um-border);
    color: var(--um-text-muted);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    padding: 0;
    transition: all 0.2s;
}
.upload-modal .modal-close:hover { color: var(--um-text-main); border-color: var(--um-text-muted); }
.upload-modal .modal-close svg { width: 18px; height: 18px; }

.upload-modal .upload-form {
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    padding: 1.5rem 1.75rem 1.75rem;
    margin: 0;
}
.upload-modal .field { display: flex; flex-direction: column; gap: 0.4rem; }
.upload-modal .field label { font-size: 0.85rem; font-weight: 600; color: var(--um-text-muted); }

.upload-modal .input-field {
    width: 100%;
    padding: 0.8rem 1rem;
    background-color: var(--um-bg-primary);
    border: 1px solid var(--um-border);
    border-radius: 8px;
    color: var(--um-text-main);
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}
.upload-modal .input-field:focus { border-color: var(--um-accent); }
.upload-modal select.input-field { cursor: pointer; }

.upload-modal .file-box {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    align-items: center;
    text-align: center;
    border: 2px dashed var(--um-border);
    padding: 1.5rem;
    border-radius: 10px;
    background-color: rgba(10, 25, 47, 0.4);
    transition: border-color 0.2s, background-color 0.2s;
}
.upload-modal .file-box.dragover { border-color: var(--um-accent); background-color: var(--um-accent-glow); }
.upload-modal .file-box > svg { width: 28px; height: 28px; color: var(--um-accent); }
.upload-modal .file-box small { color: var(--um-text-muted); font-size: 0.82rem; }

.upload-modal .file-buttons { display: flex; gap: 0.5rem; flex-wrap: wrap; justify-content: center; }
.upload-modal .file-label {
    display: inline-block;
    padding: 0.55rem 1.3rem;
    background-color: var(--um-border);
    color: var(--um-text-main);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.92rem;
    transition: background-color 0.2s;
}
.upload-modal .file-label:hover { background-color: #304b75; }

.upload-modal .file-input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}
.upload-modal .file-chosen { color: var(--um-text-main); font-size: 0.9rem; word-break: break-all; }
.upload-modal .file-preview {
    list-style: none; margin: 0; padding: 0; width: 100%;
    max-height: 120px; overflow-y: auto; text-align: left;
    font-family: Consolas, monospace; font-size: 0.78rem; color: var(--um-text-muted);
}
.upload-modal .file-preview li { padding: 2px 0; word-break: break-all; }
.upload-modal .btn-clear {
    background: none; border: none; color: var(--um-danger);
    font-size: 0.82rem; cursor: pointer; text-decoration: underline; padding: 0;
}

.upload-modal .progress { width: 100%; height: 6px; background: var(--um-bg-primary); border-radius: 999px; overflow: hidden; display: none; }
.upload-modal .progress.visible { display: block; }
.upload-modal .progress-bar { height: 100%; width: 0; background: var(--um-accent); transition: width 0.15s; }

.upload-modal .btn-submit {
    width: 100%;
    padding: 0.9rem;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    margin-top: 0.25rem;
    background-color: var(--um-accent);
    color: var(--um-bg-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: box-shadow 0.2s;
}
.upload-modal .btn-submit:hover { box-shadow: 0 0 0 4px var(--um-accent-glow); }
.upload-modal .btn-submit:disabled { opacity: 0.6; cursor: wait; }

.upload-modal .status-msg { text-align: center; font-weight: 600; font-size: 0.95rem; min-height: 1.5em; }
.upload-modal .status-msg a { color: var(--um-accent); font-size: 0.9rem; display: inline-block; margin-top: 0.5rem; }

/* ---------- Teléfono ---------- */
@media (max-width: 520px) {
    dialog.upload-modal {
        width: calc(100% - 1rem);
        max-height: calc(100vh - 1rem);
        max-height: calc(100dvh - 1rem);
        border-radius: 14px;
        overflow-y: auto;
        overscroll-behavior: contain;
    }
    .upload-modal .modal-header { padding: 1.25rem 1.1rem 0; }
    .upload-modal .modal-header h2 { font-size: 1.25rem; }
    .upload-modal .modal-close { width: 44px; height: 44px; }
    .upload-modal .upload-form { padding: 1.1rem; gap: 0.95rem; }

    /* 16px evita que iOS haga zoom automático al tocar un campo */
    .upload-modal .input-field { font-size: 16px; padding: 0.85rem 0.9rem; }

    .upload-modal .file-box { padding: 1.1rem; }
    .upload-modal .file-buttons { width: 100%; flex-direction: column; }
    .upload-modal .file-label {
        width: 100%;
        text-align: center;
        padding: 0.75rem 1rem;
    }
    .upload-modal .btn-submit { padding: 1rem; }
}

/* ---------- Sesión (auth.js) y "Subiendo como" ---------- */
.upload-modal [hidden] { display: none !important; }

.upload-modal .upload-who {
    margin: 0;
    padding: 0.6rem 0.9rem;
    border: 1px solid var(--um-border);
    border-radius: 8px;
    background-color: var(--um-bg-primary);
    color: var(--um-text-muted);
    font-size: 0.88rem;
}

.upload-modal .auth-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.35rem;
    margin: 1.25rem 1.75rem 0;
    padding: 0.3rem;
    background-color: var(--um-bg-primary);
    border: 1px solid var(--um-border);
    border-radius: 10px;
}
.upload-modal .auth-tabs button {
    min-height: 40px;
    border: none;
    border-radius: 7px;
    background: transparent;
    color: var(--um-text-muted);
    font: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}
.upload-modal .auth-tabs button:hover { color: var(--um-text-main); }
.upload-modal .auth-tabs button[aria-selected="true"] {
    background-color: var(--um-accent);
    color: var(--um-bg-primary);
}

.upload-modal .auth-grupo { text-transform: uppercase; }
.upload-modal .auth-pin { letter-spacing: 0.35em; font-variant-numeric: tabular-nums; }
.upload-modal .auth-hint { margin: -0.3rem 0 0; color: var(--um-text-muted); font-size: 0.82rem; }

.upload-modal .account-card {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding: 1rem 1.1rem;
    border: 1px solid var(--um-border);
    border-radius: 10px;
    background-color: var(--um-bg-primary);
}
.upload-modal .account-card strong { font-size: 1.1rem; }
.upload-modal .account-card span { color: var(--um-text-muted); font-size: 0.92rem; }

.upload-modal .btn-secondary {
    background-color: transparent;
    color: var(--um-text-main);
    border: 1px solid var(--um-border);
}
.upload-modal .btn-secondary:hover { border-color: var(--um-danger); color: var(--um-danger); box-shadow: none; }

@media (max-width: 520px) {
    .upload-modal .auth-tabs { margin: 1rem 1.1rem 0; }
}

/* ---------- Selector Alumno / Profesor ---------- */
.upload-modal .auth-roles { margin-top: 1.1rem; }
.upload-modal .auth-roles + .auth-tabs { margin-top: 0.5rem; }
.upload-modal .auth-panel-link { display: block; text-align: center; text-decoration: none; }
@media (max-width: 520px) {
    .upload-modal .auth-roles { margin-top: 0.9rem; }
}