@import url('https://fonts.googleapis.com/css2?family=Ubuntu:ital,wght@0,300;0,400;0,500;0,700;1,300;1,400;1,500;1,700&display=swap');

* {
    margin: 0;
    padding: 0;
    font-family: 'Ubuntu', sans-serif;
}

html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    background: var(--bg-body);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.scrollable-content {
    overflow-x: auto;
    overflow-y: auto;
}

footer, header {
    position: sticky;
    left: 0;
    display: flex;
    width: 100%;
    height: 60px;
    align-items: center;
    z-index: 10;
}

main {
    flex: 1;
    min-height: calc(100vh - 100px);
    padding: 10px 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--bg-body);
}

header {
    border-bottom: 1px solid var(--header-border);
    top: 0;
    justify-content: flex-start;
    column-gap: 12px;
    padding: 5px 20px;
    background: var(--header-bg);
}

/* Wraps the two switcher pills – hidden on mobile */
.header-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ── Burger button ── */
.burger-btn {
    display: none;
    background: none;
    border: 1px solid var(--border-default);
    border-radius: 12px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 1.1rem;
    padding: 6px 12px;
    line-height: 1;
    transition: background 0.2s, border-color 0.2s;
}

.burger-btn:hover {
    background: var(--bg-surface);
}

.burger-btn.open {
    background: var(--bg-surface-alt);
    border-color: var(--border-strong);
}

/* ── Burger dropdown panel ── */
.burger-menu {
    display: none;
}

@media (max-width: 450px) {
    main {
        padding: 10px;
    }

    .header-controls {
        display: none;
    }

    #logo {
        display: none;
    }

    .burger-btn {
        display: flex;
        align-items: center;
        order: -1;
    }

    .burger-menu {
        display: flex;
        flex-direction: column;
        gap: 4px;
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        z-index: 999;
        background: var(--header-bg);
        border-bottom: 1px solid var(--header-border);
        box-shadow: var(--shadow-md);
        padding: 10px 16px 14px;
        opacity: 0;
        transform: translateY(-6px);
        pointer-events: none;
        transition: opacity 0.22s ease, transform 0.22s ease;
    }

    .burger-menu.open {
        opacity: 1;
        transform: translateY(0);
        pointer-events: all;
    }

    .burger-link {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 8px;
        border-radius: 6px;
        text-decoration: none;
        color: var(--text-primary);
        font-size: 1rem;
        font-weight: 500;
        transition: background 0.15s;
    }

    .burger-link:hover {
        background: var(--bg-surface);
        color: var(--color-primary);
    }

    .burger-link i {
        width: 18px;
        text-align: center;
        color: var(--text-muted);
    }

    .burger-divider {
        height: 1px;
        background: var(--border-default);
        margin: 6px 0;
    }

    .burger-switches {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 6px 8px;
    }
}

footer {
    height: 40px;
    justify-content: center;
    color: var(--footer-text);
    border-top: 1px solid var(--header-border);
    background: var(--footer-bg);
}

#logo {
    margin: 0;
}

    #logo a {
        text-decoration: none;
        color: var(--logo-color);
        font-weight: 500;
        font-size: 18px;
    }

/* Authentication Container */
.auth-container {
    position: relative;
    margin-left: auto;
    margin-right: 0;
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    align-items: center;
    background: var(--switcher-bg);
    border-radius: 20px;
    padding: 3px;
    position: relative;
}

.language-switcher::before {
    content: '';
    position: absolute;
    width: calc(50% - 3px);
    height: calc(100% - 6px);
    background: var(--color-primary);
    border-radius: 18px;
    transition: transform 0.3s ease;
    top: 3px;
    left: 3px;
}

.language-switcher.cz-active::before {
    transform: translateX(100%);
}

.lang-btn {
    padding: 4px 6px;
    border-radius: 18px;
    text-decoration: none;
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    background: transparent;
    position: relative;
    z-index: 1;
    transition: opacity 0.3s ease;
    user-select: none;
    display: flex;
    align-items: center;
}

/* EN/🇺🇸 active by default */
.lang-btn:first-child {
    opacity: 1;
}

.lang-btn:last-child {
    opacity: 0.45;
}

/* CZ/🇨🇿 active */
.language-switcher.cz-active .lang-btn:first-child {
    opacity: 0.45;
}

.language-switcher.cz-active .lang-btn:last-child {
    opacity: 1;
}

/* User Info (when logged in) */
.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

    .user-info > div {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        margin-right: 10px;
    }

.username {
    font-weight: 500;
    color: var(--text-primary);
}

.user-role {
    color: var(--text-muted);
    font-size: 0.9em;
}

.logout-form {
    margin: 0;
}

.logout-btn {
    background: red;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s, opacity 0.2s;
}

/* Login Container */
.login-container {
    position: relative;
}

.login-toggle-btn {
    background: var(--color-primary);
    color: var(--text-on-primary);
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.2s;
}

    .login-toggle-btn:hover {
        background: var(--color-primary-hover);
        color: var(--text-on-primary);
    }

/* Login Form */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-input {
    padding: 10px 12px;
    border: 1px solid var(--input-border);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--input-bg);
    color: var(--text-primary);
}

    .form-input:focus {
        outline: none;
        border-color: var(--input-focus-border);
        box-shadow: 0 0 0 2px var(--input-focus-ring);
    }

.checkbox-group {
    flex-direction: row;
    align-items: center;
}

.remember-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

    .remember-label:hover {
        color: var(--text-primary);
    }

    .remember-label input[type="checkbox"] {
        margin: 0;
    }

.login-submit-btn {
    background: var(--color-success);
    color: var(--text-on-primary);
    border: none;
    padding: 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s, opacity 0.2s;
}

    .login-submit-btn:hover:not(:disabled) {
        background: var(--color-success-hover);
    }

    .login-submit-btn:disabled {
        opacity: 0.6;
        cursor: not-allowed;
    }

/* Login Error Alert */
.login-form .alert {
    padding: 10px 12px;
    border-radius: 4px;
    font-size: 13px;
    margin: 0;
}

.login-form .alert-danger {
    background-color: var(--alert-danger-bg);
    color: var(--alert-danger-text);
    border: 1px solid var(--alert-danger-border);
}