/* ==========================================================================
   Kunden-Backend – Basis-Stylesheet
   Im Stil von X/Twitter: Schwarz/Weiß/Grau, wenige Akzentfarben.
   Alle Farben zentral über CSS-Variablen anpassbar.
   ========================================================================== */

:root {
    /* --- Basis --- */
    --color-bg: #ffffff;
    --color-bg-subtle: #f7f9f9;
    --color-bg-muted: #eff3f4;
    --color-surface: #ffffff;

    /* --- Text --- */
    --color-text: #0f1419;
    --color-text-secondary: #536471;
    --color-text-muted: #8b98a5;

    /* --- Rahmen --- */
    --color-border: #eff3f4;
    --color-border-strong: #cfd9de;

    /* --- Primär (Hauptaktionen, schwarz) --- */
    --color-primary: #0f1419;
    --color-primary-hover: #272c30;
    --color-primary-text: #ffffff;

    /* --- Erfolg / Speichern / Veröffentlichen --- */
    --color-success: #00ba7c;
    --color-success-hover: #00a06d;
    --color-success-text: #ffffff;
    --color-success-bg: #e8f8f2;
    --color-success-border: #b8e8d4;
    --color-success-text-dark: #0a6640;

    /* --- Gefahr / Löschen --- */
    --color-danger: #f4212e;
    --color-danger-hover: #dc1c28;
    --color-danger-text: #ffffff;
    --color-danger-bg: #fde8ea;
    --color-danger-border: #f5b8be;
    --color-danger-text-dark: #8b1538;

    /* --- Sekundär (Outline-Buttons) --- */
    --color-secondary-bg: transparent;
    --color-secondary-hover: #eff3f4;
    --color-secondary-text: #0f1419;
    --color-secondary-border: #cfd9de;

    /* --- Layout --- */
    --header-height: 53px;
    --content-max-width: 600px;
    --content-padding: clamp(12px, 4vw, 20px);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 9999px;

    /* --- Schatten & Overlay --- */
    --shadow-header: 0 1px 0 var(--color-border);
    --shadow-modal: 0 8px 32px rgba(15, 20, 25, 0.12);
    --overlay-bg: rgba(15, 20, 25, 0.4);

    /* --- Übergänge --- */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
}

/* ==========================================================================
   Reset & Grundlagen
   ========================================================================== */

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

html {
    scroll-behavior: auto;
    -webkit-text-size-adjust: 100%;
    background: var(--color-bg);
}

body {
    font-family: 'rubikregular', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.5;
    min-height: 100vh;
    min-height: 100dvh;
    background: var(--color-bg);
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
}

body.modal-open {
    overflow: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: var(--color-text);
    -webkit-tap-highlight-color: transparent;
}

a:visited {
    color: var(--color-text);
}

ul {
    list-style: none;
}

h1, h2, h3, h4 {
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.25;
}

/* ==========================================================================
   Layout
   ========================================================================== */

#container {
    width: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 0 var(--content-padding);
    padding-top: calc(var(--header-height) + 16px);
    padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
}

#container.container--login {
    display: flex;
    flex-direction: column;
}

#container.container--login main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 0;
    margin-top: 0;
}

main {
    width: 100%;
}

footer {
    margin-top: 32px;
    padding-bottom: env(safe-area-inset-bottom, 0px);
}

/* ==========================================================================
   Header
   ========================================================================== */

#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    padding-top: env(safe-area-inset-top, 0px);
}

#logo {
    position: relative;
    width: 100%;
    max-width: var(--content-max-width);
    height: var(--header-height);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

#logo img {
    height: 32px;
    width: auto;
    max-width: calc(100% - 120px);
    object-fit: contain;
}

#logo a {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.back-button {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-left: calc(var(--content-padding) - 8px);
    font-size: 28px;
    line-height: 1;
    color: var(--color-text);
    border-radius: 50%;
    z-index: 10;
}

@media (hover: hover) {
    .back-button:hover {
        background: var(--color-bg-muted);
    }
}

.back-button:focus-visible {
    outline: 2px solid var(--color-border-strong);
    outline-offset: 2px;
}

.back-button--spacer {
    visibility: hidden;
    pointer-events: none;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.button-link,
button.button-link,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 44px;
    padding: 10px 20px;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    line-height: 1.35;
    text-align: center;
    cursor: pointer;
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast),
        opacity var(--transition-fast);
}

.button-link:hover,
button.button-link:hover,
.btn:hover {
    transform: translateY(-1px);
}

.button-link:focus-visible,
button.button-link:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--color-border-strong);
    outline-offset: 2px;
}

.button-link:disabled,
button.button-link:disabled,
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Primär – schwarz, volle Fläche */
.button-primary,
.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-primary-text);
    border-color: var(--color-primary);
}

.button-primary:visited,
.btn-primary:visited {
    color: var(--color-primary-text);
}

.button-primary:hover,
.btn-primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--color-primary-text);
}

/* Sekundär – Outline */
.button-secondary,
.btn-secondary {
    background-color: var(--color-secondary-bg);
    color: var(--color-secondary-text);
    border-color: var(--color-secondary-border);
}

.button-secondary:visited,
.btn-secondary:visited {
    color: var(--color-secondary-text);
}

.button-secondary:hover,
.btn-secondary:hover {
    background-color: var(--color-secondary-hover);
    color: var(--color-secondary-text);
}

/* Erfolg – grün */
.button-success,
.btn-success {
    background-color: var(--color-success);
    color: var(--color-success-text);
    border-color: var(--color-success);
}

.button-success:visited,
.btn-success:visited {
    color: var(--color-success-text);
}

.button-success:hover,
.btn-success:hover {
    background-color: var(--color-success-hover);
    border-color: var(--color-success-hover);
    color: var(--color-success-text);
}

/* Gefahr – rot */
.button-danger,
.btn-danger,
.delete-button {
    background-color: var(--color-danger);
    color: var(--color-danger-text);
    border-color: var(--color-danger);
}

.button-danger:visited,
.btn-danger:visited {
    color: var(--color-danger-text);
}

.button-danger:hover,
.btn-danger:hover,
.delete-button:hover {
    background-color: var(--color-danger-hover);
    border-color: var(--color-danger-hover);
    color: var(--color-danger-text);
}

.delete-button {
    min-height: 44px;
    padding: 10px 20px;
    border-radius: var(--radius-pill);
    border: none;
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
}

.delete-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 14px;
}

/* ==========================================================================
   Formulare
   ========================================================================== */

form label {
    display: block;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    margin-top: 16px;
    margin-bottom: 6px;
}

form input:not([type="submit"]):not([type="button"]):not([type="hidden"]):not([type="checkbox"]):not([type="radio"]),
form textarea,
form select {
    width: 100%;
    min-height: 44px;
    padding: 10px 14px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-surface);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

form textarea {
    min-height: 160px;
    resize: vertical;
    line-height: 1.5;
}

form input:not([type="submit"]):not([type="button"]):not([type="hidden"]):focus,
form textarea:focus,
form select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(15, 20, 25, 0.08);
}

form input[type="submit"],
form button[type="submit"] {
    display: block;
    width: 100%;
    min-height: 44px;
    margin-top: 24px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-pill);
    background-color: var(--color-success);
    color: var(--color-success-text);
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast), opacity var(--transition-fast);
}

form input[type="submit"]:hover,
form button[type="submit"]:hover {
    background-color: var(--color-success-hover);
    transform: translateY(-1px);
}

form input[type="submit"]:disabled,
form button[type="submit"]:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.eingabe {
    margin-bottom: 20px;
}

/* Login: Unterstrichene Inputs */
form.login-form input:not([type="submit"]) {
    border: none;
    border-bottom: 1px solid var(--color-border-strong);
    border-radius: 0;
    padding-left: 0;
    padding-right: 0;
    background: transparent;
}

form.login-form input:not([type="submit"]):focus {
    border-color: var(--color-primary);
    box-shadow: none;
}

form.login-form input[type="submit"] {
    margin-top: 40px;
    background-color: var(--color-primary);
    color: var(--color-primary-text);
}

form.login-form input[type="submit"]:hover {
    background-color: var(--color-primary-hover);
}

/* ==========================================================================
   Karten & Boxen
   ========================================================================== */

.section-box {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 16px;
    background: var(--color-bg);
}

.section-box h2 {
    font-size: 20px;
    margin-bottom: 6px;
}

.section-desc,
.page-text {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.55;
}

.section-desc {
    margin-bottom: 16px;
}

.info-box,
.preview-box,
.empty-box {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 14px;
    background: var(--color-bg-subtle);
    margin-top: 12px;
}

.info-row {
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}

.info-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.info-label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 4px;
}

.info-value {
    display: block;
    font-size: 15px;
    color: var(--color-text);
    word-break: break-word;
    line-height: 1.45;
}

/* ==========================================================================
   Alerts
   ========================================================================== */

.alert {
    padding: 12px 14px;
    margin: 16px 0;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    font-size: 14px;
    line-height: 1.45;
}

.alert-success {
    color: var(--color-success-text-dark);
    background-color: var(--color-success-bg);
    border-color: var(--color-success-border);
}

.alert-danger {
    color: var(--color-danger-text-dark);
    background-color: var(--color-danger-bg);
    border-color: var(--color-danger-border);
}

.notice .alert-danger {
    text-align: center;
}

/* ==========================================================================
   Modals & Popups
   ========================================================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.popup-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay-bg);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    z-index: 3000;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.popup-overlay.active {
    display: flex;
}

.modal-box,
.popup-box {
    width: 100%;
    max-width: 360px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-modal);
    text-align: center;
    transform: translateY(8px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-box,
.popup-overlay.active .popup-box {
    transform: translateY(0);
}

.modal-box h3,
.popup-box h4 {
    margin-bottom: 10px;
    font-size: 20px;
    font-weight: 700;
}

.modal-box p,
.popup-box p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.55;
    margin-bottom: 20px;
    word-break: break-word;
}

.modal-actions,
.popup-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.modal-cancel,
.modal-confirm,
.popup-cancel,
.popup-confirm,
.popup-close {
    min-width: 120px;
    min-height: 44px;
    border: none;
    border-radius: var(--radius-pill);
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast), opacity var(--transition-fast);
}

.modal-cancel,
.popup-cancel {
    background: var(--color-bg-muted);
    color: var(--color-text);
}

.modal-cancel:hover,
.popup-cancel:hover {
    background: var(--color-secondary-hover);
    transform: translateY(-1px);
}

.modal-confirm,
.popup-confirm,
.popup-close {
    background: var(--color-primary);
    color: var(--color-primary-text);
}

.modal-confirm:hover,
.popup-confirm:hover,
.popup-close:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
}

.modal-confirm:disabled,
.modal-cancel:disabled,
.popup-confirm:disabled,
.popup-cancel:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ==========================================================================
   Footer-Links
   ========================================================================== */

footer a {
    display: block;
    text-align: center;
    border: 1px solid var(--color-secondary-border);
    border-radius: var(--radius-pill);
    padding: 14px 20px;
    margin-top: 10px;
    font-weight: 700;
    color: var(--color-danger);
    transition: background-color var(--transition-fast);
}

footer a:hover {
    background: var(--color-danger-bg);
}

/* ==========================================================================
   Animationen
   ========================================================================== */

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes popupIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* ==========================================================================
   Responsive
   ========================================================================== */

@media screen and (min-width: 600px) {
    .button-group.two-columns {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
}

@media screen and (max-width: 599px) {
    #logo img {
        height: 28px;
    }

    .back-button {
        width: 40px;
        height: 40px;
        font-size: 24px;
        margin-left: 4px;
    }

    .modal-actions,
    .popup-actions {
        flex-direction: column-reverse;
    }

    .modal-cancel,
    .modal-confirm,
    .popup-cancel,
    .popup-confirm,
    .popup-close {
        width: 100%;
        min-width: 0;
    }

    .beitrag-actions {
        justify-content: stretch;
    }

    .delete-form,
    .delete-button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}