body {
    background: url('/static/uploads/estadio.jpg') no-repeat center center fixed;
    background-size: cover;
    position: relative;
    min-height: 100vh;
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
}
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.35); /* overlay blanco más transparente */
    z-index: 0;
    pointer-events: none;
}
.main-content, .container, .sidebar {
    position: relative;
    z-index: 1;
}

h1 {
    color: #1a73e8;
    text-align: center;
    margin-top: 30px;
}

p {
    text-align: center;
    color: #555;
}

#search {
    padding: 8px;
    border-radius: 5px;
    border: 1px solid #ccc;
    width: 200px;
}

button {
    background: #1a73e8;
    color: #fff;
    border: none;
    border-radius: 5px;
    padding: 8px 16px;
    margin: 5px 2px;
    cursor: pointer;
    font-size: 1em;
    transition: background 0.2s;
}
button:hover {
    background: #155ab6;
}

#exercises > div {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    margin: 20px auto;
    padding: 20px;
    max-width: 400px;
    text-align: center;
    transition: box-shadow 0.2s;
}
#exercises > div:hover {
    box-shadow: 0 4px 16px rgba(26,115,232,0.15);
}

img {
    border-radius: 8px;
    margin: 10px 0;
    box-shadow: 0 1px 4px rgba(0,0,0,0.10);
}

form#addExerciseForm {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    max-width: 400px;
    margin: 30px auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

form#addExerciseForm input {
    padding: 8px;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 1em;
}

h2 {
    color: #1a73e8;
    text-align: center;
    margin-top: 40px;
}

.form-container {
    --form-pad-x: 28px;
    --form-pad-t: 28px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(26,115,232,0.10);
    padding: var(--form-pad-t) var(--form-pad-x) 24px var(--form-pad-x);
    max-width: 380px;
    width: 100%;
    margin: 40px auto;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    box-sizing: border-box;
    animation: fadeIn 0.7s;
}

/* Logo a ancho completo en la parte superior de la tarjeta (sin “marco” interior) */
.form-container > .form-logo-wrap {
    align-self: stretch;
    width: calc(100% + 2 * var(--form-pad-x));
    max-width: none;
    margin: calc(-1 * var(--form-pad-t)) calc(-1 * var(--form-pad-x)) 18px calc(-1 * var(--form-pad-x));
    padding: 14px 0 0;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 16px 16px 0 0;
    overflow: hidden;
    box-sizing: border-box;
}

/* Anula el estilo global `img` (sombra + radio) que dibujaba un marco alrededor del logo */
.form-container .form-logo-img {
    max-height: 175px;
    width: auto;
    max-width: min(340px, 82vw);
    object-fit: contain;
    object-position: center center;
    display: block;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    margin: 0;
}

.form-container form {
    width: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 0;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.input-group {
    position: relative;
    width: 100%;
    margin-bottom: 14px;
    box-sizing: border-box;
}

.input-group svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    fill: #8a94a6;
    pointer-events: none;
}

.form-container input[type="email"],
.form-container input[type="password"],
.form-container input[type="text"] {
    width: 100%;
    padding: 12px 12px 12px 40px;
    border-radius: 8px;
    border: 1px solid #b8c5ce;
    font-size: 1em;
    margin-bottom: 0;
    transition: border 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
    background: #f0f6fa;
}
.form-container input:focus {
    border: 1.5px solid #1a73e8;
    outline: none;
}

.form-container button {
    width: 100%;
    background: linear-gradient(90deg, #1a73e8 60%, #3d7eea 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 12px 0;
    font-size: 1.08em;
    font-weight: 600;
    margin-top: 6px;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(26,115,232,0.18);
    transition: background 0.2s, transform 0.1s;
    box-sizing: border-box;
}
.form-container button:hover {
    background: linear-gradient(90deg, #155ab6 60%, #1a73e8 100%);
    transform: translateY(-1px);
}

.form-container p {
    margin-top: 16px;
    color: #555;
    font-size: 0.98em;
    text-align: center;
    width: 100%;
    box-sizing: border-box;
}

.form-container p a {
    color: #5c4bb7;
    font-weight: 600;
    text-decoration: none;
}
.form-container p a:hover {
    text-decoration: underline;
}

#message {
    margin-top: 10px;
    color: #e53935;
    font-weight: 500;
    min-height: 24px;
    text-align: center;
}

@media (max-width: 500px) {
    .form-container {
        --form-pad-x: 6vw;
        --form-pad-t: 18px;
        padding: 18px 6vw 18px 6vw;
        max-width: 98vw;
    }
}

.header-container {
    background: transparent !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin-bottom: 0 !important;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    position: fixed;
    right: 32px;
    top: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 9999;
}

.user-info span {
    font-size: 0.9em;
    color: #4c6ef5;
}

.user-info button {
    background: #6c757d;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 0.8em;
    transition: background 0.2s;
}
.user-info button:hover {
    background: #495057;
}

.header-container h1 {
    margin: 0;
    font-size: 1.8em;
    text-align: left;
    flex-grow: 1;
}

.controls-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

#categoryFilter {
    padding: 8px;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 1em;
    cursor: pointer;
    background-color: #f9f9f9;
    transition: border-color 0.2s;
}

#categoryFilter:focus {
    border-color: #1a73e8;
    outline: none;
}

.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 30px;
    margin-bottom: 30px;
}

.pagination-controls button {
    padding: 8px 16px;
    background: #1a73e8;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.2s;
}

.pagination-controls button:hover:not(:disabled) {
    background: #155ab6;
}

.pagination-controls button:disabled {
    background: #cccccc;
    cursor: not-allowed;
}

#pageInfo {
    font-size: 1.1em;
    font-weight: 500;
    color: #333;
}

.sessions-list-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.05);
    animation: fadeIn 0.7s;
}

.sessions-list-container h2 {
    color: #1a73e8;
    text-align: center;
    margin-bottom: 25px;
}

.session-card {
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
    border: 1.5px solid #388e3c;
    padding: 15px;
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.session-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.session-card h3 {
    color: #333;
    margin: 0 0 5px 0;
    font-size: 1.3em;
}

.session-card p {
    color: #666;
    margin: 0;
    font-size: 0.95em;
    text-align: left;
}

.session-card button {
    align-self: flex-end;
    padding: 6px 12px;
    font-size: 0.85em;
}

.session-card button:hover {
    background: #155ab6;
}

/* Elimino sidebar y layouts de columnas innecesarios */
.sidebar {
    display: none !important;
}
.main-content {
    display: block !important;
    background: none !important;
    width: 100%;
    margin: 0 auto;
    padding: 0;
}

.main-content h1, .container h1 {
    background: #4CAF50;
    color: #fff;
    border-radius: 6px;
    padding: 8px 18px;
    margin-bottom: 12px;
    margin-top: 0;
    font-size: 1.5em;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
    display: inline-block;
    text-align: left;
}

.main-content > p:first-of-type {
    margin-top: 48px;
}

.main-content {
    min-height: 350px;
}

@media (max-width: 700px) {
    .user-info {
        position: static;
        right: auto;
        top: auto;
        justify-content: flex-end;
        margin-bottom: 12px;
    }
}

.user-bar {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100%;
    max-width: 600px;
    margin: 0 auto 18px auto;
    padding: 0 18px;
    position: relative !important;
    z-index: 10;
}
.user-bar .user-info {
    position: static !important;
    right: auto !important;
    top: auto !important;
    gap: 0 !important;
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.user-bar .logout-btn {
    margin-left: 18px;
    flex-shrink: 0;
}
@media (max-width: 700px) {
    .user-bar {
        flex-direction: column !important;
        align-items: stretch !important;
        padding: 0 4vw;
        max-width: 98vw;
    }
    .user-bar .user-info {
        margin-bottom: 8px;
        text-align: left;
    }
    .user-bar .logout-btn {
        margin-left: 0;
        width: 100%;
    }
} 
.topbar-logo {
    height: 38px !important;
    width: auto !important;
    margin-right: 14px !important;
    max-width: 120px;
    max-height: 38px;
    display: inline-block;
} 
.topbar {
    width: 100%;
    height: 60px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    padding: 0 32px;
    position: relative;
    z-index: 100;
}
.topbar-left { display: flex; align-items: center; }
.topbar-logo { height: 38px; margin-right: 14px; }
.topbar-title { font-size: 1.6em; font-weight: bold; color: #3a4a5d; letter-spacing: 1px; }
.topbar-right { display: flex; align-items: center; gap: 18px; }
.logout-btn { background: #555; color: #fff; border: none; border-radius: 6px; padding: 7px 18px; font-size: 1em; cursor: pointer; }
.main-nav {
    width: 100%;
    background: #444e5a;
    display: flex;
    align-items: center;
    padding-left: 32px;
    min-height: 44px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    position: relative;
    z-index: 50;
}
.nav-link {
    color: #fff;
    text-decoration: none;
    padding: 12px 24px;
    font-size: 1.08em;
    font-weight: 500;
    border-bottom: 3px solid transparent;
    transition: background 0.2s, border-bottom 0.2s;
}
.nav-link:hover, .nav-link.active {
    background: #3a4a5d;
    border-bottom: 3px solid #ff9800;
}
.nav-dropdown {
    position: relative;
    display: flex;
    flex-direction: column;
}
.nav-dropdown > .nav-link {
    cursor: pointer;
}
.nav-dropdown .dropdown-content {
    display: none;
    position: absolute;
    left: 0;
    top: 100%;
    background: #e8f5e9;
    min-width: 180px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
    z-index: 200;
    border-radius: 0 0 8px 8px;
    overflow: hidden;
}
.nav-dropdown:hover .dropdown-content, .nav-dropdown:focus-within .dropdown-content {
    display: block;
}
.dropdown-content .nav-link {
    color: #256029;
    background: #e8f5e9;
    padding: 12px 24px;
    border-bottom: 1px solid #c8e6c9;
    display: block;
    font-weight: 500;
    white-space: nowrap;
}
.dropdown-content .nav-link:hover {
    background: #c8e6c9;
    color: #388e3c;
}
@media (max-width: 900px) {
    .main-nav { flex-wrap: wrap; padding-left: 8px; }
    .nav-link, .dropdown-content .nav-link { padding: 10px 12px; font-size: 1em; }
}
@media (max-width: 600px) {
    .main-nav { flex-direction: column; align-items: stretch; }
    .nav-dropdown, .dropdown-content { width: 100%; }
    .dropdown-content .nav-link { padding: 10px 18px; }
} 
.container#pdfContent > .ejercicio-card {
    max-width: 700px;
    margin: 40px auto 32px auto;
    padding: 32px 28px 28px 28px;
    box-sizing: border-box;
    width: 100%;
    min-width: 0;
}