/* ============================================================
   Venture Agency – Base Stylesheet
   base.css – Reset, typografie, tlačítka, formuláře, tabulky.
   Sdílí veřejný web i administrace. Načítá se po tokens.css.
   ============================================================ */

/* ============================================================
   2. CSS Reset & Base
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--primary-font);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--ink-soft);
    background-color: var(--paper);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Jemná struktura papíru. Jeden inline SVG šum, žádný obrázek ke stažení.
   Administrace ho nechce – tam je plocha záměrně čistá. */
body:not(.admin-body)::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: .5;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
}

/* Viditelný focus je podmínka, ne dekorace. */
:focus-visible {
    outline: 2px solid var(--ink);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

::selection { background: var(--signal-wash); color: var(--ink); }

/* Pokud si uživatel přeje klid, dostane ho – včetně herní vrstvy. */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
        scroll-behavior: auto !important;
    }
}

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

a {
    color: var(--accent-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover { color: var(--accent-text-hover); }

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
    font-family: var(--alt-font);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.02em;
    color: var(--ink);
    text-wrap: balance;
}

h1 { font-size: clamp(2.25rem, 6vw, 4.25rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.6rem); }
h3 { font-size: 1.3rem; letter-spacing: -0.01em; }
h4 { font-size: 1.1rem; letter-spacing: -0.01em; }

/* Technický štítek – číslo případu, stav, pořadí složky.
   Používá ho veřejný web i administrace. */
.tech-label {
    display: inline-block;
    font-family: var(--mono-font);
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

/* Zvýrazňovač – jediné místo, kde signální barva leží pod textem. */
.marker {
    background-image: linear-gradient(var(--signal-wash), var(--signal-wash));
    background-repeat: no-repeat;
    background-size: 100% .55em;
    background-position: 0 88%;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
}

p { margin-bottom: var(--space-4); }
p:last-child { margin-bottom: 0; }

strong { font-weight: 600; color: var(--dark-gray); }
code {
    font-family: monospace;
    background: var(--dark-slate-blue);
    padding: 0.1em 0.4em;
    border-radius: var(--radius-sm);
    font-size: .875em;
    color: var(--accent-text);
}


/* ============================================================
   3. Layout Utilities
   ============================================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.container--narrow { max-width: 780px; }

.section {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
}

.section--sm {
    padding-top: var(--space-10);
    padding-bottom: var(--space-10);
}

.section--dark { background-color: var(--extra-very-slate-blue); }

.grid {
    display: grid;
    gap: var(--space-6);
}
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .grid--3 { grid-template-columns: repeat(2, 1fr); }
    .grid--2 { grid-template-columns: 1fr; }
}
@media (max-width: 580px) {
    .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

/* Centrovaná 4-sloupcová mřížka – neúplný poslední řádek se vystředí */
.grid--4-center {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
.grid--4-center > * { flex: 0 0 calc((100% - 3 * var(--space-6)) / 4); min-width: 0; }
.grid--4-center > .grid-span-full { flex-basis: 100%; }

@media (max-width: 1024px) {
    .grid--4-center > * { flex-basis: calc((100% - var(--space-6)) / 2); }
}
@media (max-width: 580px) {
    .grid--4-center > * { flex-basis: 100%; }
}

.text-center { text-align: center; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }


/* ============================================================
   4. Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    font-family: var(--alt-font);
    font-size: .875rem;
    font-weight: 600;
    line-height: 1.4;
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast),
                border-color var(--transition-fast), box-shadow var(--transition-fast),
                transform var(--transition-fast);
    white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
    background: var(--base-color);
    color: var(--accent-ink);
    border-color: var(--base-color);
}
.btn--primary:hover {
    background: var(--base-color-hover);
    border-color: var(--base-color-hover);
    color: var(--accent-ink);
    box-shadow: var(--shadow-glow);
}

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

.btn--outline {
    background: transparent;
    color: var(--ink);
    border-color: var(--ink);
}
.btn--outline:hover {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--paper-card);
}

.btn--outline-accent {
    background: transparent;
    color: var(--accent-text);
    border-color: var(--accent-text);
}
.btn--outline-accent:hover {
    background: var(--base-color);
    color: var(--accent-ink);
}

.btn--danger {
    background: var(--red);
    color: var(--white);
    border-color: var(--red);
}
.btn--danger:hover {
    background: #c42a2a;
    border-color: #c42a2a;
    color: var(--white);
}

.btn--success {
    background: var(--success-solid);
    color: var(--white);
    border-color: var(--success-solid);
}

.btn--xs  { padding: 0.25rem 0.6rem;  font-size: .75rem; }
.btn--sm  { padding: 0.45rem 0.9rem;  font-size: .8rem; }
.btn--lg  { padding: 0.75rem 1.75rem; font-size: 1rem; }
.btn--xl  { padding: 0.9rem 2rem;     font-size: 1.05rem; }
.btn--block { width: 100%; }

/* Spinner – vkládá main.js do tlačítka po odeslání formuláře */
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin .6s linear infinite;
    vertical-align: -3px;
    flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn:disabled,
.btn[disabled] {
    opacity: .65;
    cursor: not-allowed;
    transform: none;
}


/* ============================================================
   5. Forms
   ============================================================ */
.form-group { margin-bottom: var(--space-5); }
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-family: var(--mono-font);
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

/* Pole formuláře = předtištěná kolonka na papíru. */
.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: var(--paper-card);
    border: 1px solid var(--paper-shade);
    border-bottom-width: 2px;
    border-radius: var(--radius-sm);
    color: var(--ink);
    font-family: var(--primary-font);
    font-size: .95rem;
    line-height: 1.5;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
}
.form-control:focus {
    outline: none;
    border-color: var(--ink);
    box-shadow: 0 0 0 3px var(--signal-wash);
}
.form-control::placeholder { color: var(--ink-faint); }

/* Chybný stav – nasazuje showFieldError() v main.js */
.form-control--error,
.form-control[aria-invalid="true"] {
    border-color: var(--red);
    background: rgba(220,49,49,.04);
}
.form-control--error:focus,
.form-control[aria-invalid="true"]:focus {
    border-color: var(--red);
    box-shadow: 0 0 0 3px rgba(220,49,49,.15);
}

textarea.form-control { resize: vertical; min-height: 120px; }
select.form-control { cursor: pointer; }

.form-error {
    color: var(--red);
    font-size: .8rem;
    margin-top: var(--space-1);
}
.form-hint {
    color: var(--aluminium-grey);
    font-size: .8rem;
    margin-top: var(--space-1);
}


/* ============================================================
   7. Flash Messages
   ============================================================ */
.flash {
    position: fixed;
    top: calc(var(--nav-height) + var(--space-3));
    left: 50%;
    transform: translateX(-50%);
    z-index: 300;
    width: min(600px, calc(100vw - 2rem));
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: flashIn .25s ease;
}
@keyframes flashIn {
    from { opacity: 0; transform: translateX(-50%) translateY(-8px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.flash--success { background: #e6f9f1; border: 1px solid rgba(46,187,121,.3); }
.flash--error   { background: #fce6e6; border: 1px solid rgba(220,49,49,.3); }
.flash--warning { background: #fef3e6; border: 1px solid rgba(253,150,30,.3); }
.flash--info    { background: rgba(184,184,37,.1); border: 1px solid rgba(184,184,37,.2); }

.flash__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-5);
}

.flash__text { font-size: .9rem; font-weight: 500; }
.flash--success .flash__text { color: var(--green); }
.flash--error   .flash__text { color: var(--red); }
.flash--warning .flash__text { color: var(--golden-yellow); }
.flash--info    .flash__text { color: var(--accent-text); }

.flash__close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--medium-gray);
    padding: var(--space-1);
    flex-shrink: 0;
    transition: color var(--transition-fast);
}
.flash__close:hover { color: var(--dark-gray); }


/* ============================================================
   8. Badges
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2em 0.6em;
    border-radius: var(--radius-full);
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .02em;
    line-height: 1.4;
}
/* Odznaky mají tenkou linku ve vlastním odstínu – na papíru by samotná
   světlá výplň splývala s podkladem. Text je vždy v tmavé variantě barvy. */
.badge--primary   { background: var(--signal-wash);  color: var(--signal-text); border: 1px solid rgba(110,110,18,.35); }
.badge--success   { background: var(--success-soft); color: var(--success);     border: 1px solid rgba(26,127,79,.3); }
.badge--warning   { background: var(--warning-soft); color: var(--warning);     border: 1px solid rgba(180,112,12,.3); }
.badge--danger    { background: var(--danger-soft);  color: var(--danger);      border: 1px solid rgba(179,57,46,.3); }
.badge--info      { background: var(--info-soft);    color: var(--info);        border: 1px solid rgba(47,75,110,.3); }
.badge--secondary,
/* badge--gray a badge--error používá administrace; bez těchto pravidel
   se odznaky vykreslovaly jako holý text. */
.badge--gray      { background: var(--paper-deep);   color: var(--ink-muted);   border: 1px solid var(--paper-shade); }
.badge--error     { background: var(--danger-soft);  color: var(--danger);      border: 1px solid rgba(179,57,46,.3); }


/* ============================================================
   17. Prose (rich text output)
   ============================================================ */
.prose { color: var(--aluminium-grey); line-height: 1.8; }
.prose h1, .prose h2, .prose h3, .prose h4 { color: var(--dark-gray); margin: 1.5em 0 .5em; }
.prose p  { margin-bottom: 1em; }
.prose ul, .prose ol { padding-left: 1.5em; margin-bottom: 1em; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: .4em; }
.prose a  { color: var(--accent-text); }
.prose a:hover { text-decoration: underline; }
.prose strong { color: var(--dark-gray); }
.prose img { border-radius: var(--radius-lg); margin: var(--space-6) 0; }
.prose blockquote {
    border-left: 3px solid var(--base-color);
    padding-left: var(--space-5);
    margin: var(--space-6) 0;
    color: var(--medium-gray);
    font-style: italic;
}
.prose hr { border: none; border-top: 1px solid rgba(0,0,0,.08); margin: var(--space-8) 0; }


/* ============================================================
   19. Data Tables
   ============================================================ */
.table-wrap { overflow-x: auto; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .875rem;
}
.data-table th {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid rgba(0,0,0,.08);
    text-align: left;
    font-weight: 600;
    font-size: .8rem;
    color: var(--medium-gray);
    text-transform: uppercase;
    letter-spacing: .05em;
    white-space: nowrap;
}
.data-table td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid rgba(0,0,0,.04);
    color: var(--dark-gray);
    vertical-align: middle;
}
.data-table tbody tr:hover td { background: rgba(0,0,0,.025); }
.data-table tfoot td {
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid rgba(0,0,0,.08);
    color: var(--dark-gray);
}


/* ============================================================
   24. Utility + Misc
   ============================================================ */
.price      { font-weight: 700; color: var(--dark-gray); }
.price--free { color: var(--green); }
.price--lg  { font-size: 1.5rem; }
.price--sale { color: var(--green); }
.price--orig {
    font-size: .85rem;
    font-weight: 400;
    color: var(--aluminium-grey);
    text-decoration: line-through;
}

.admin-card {
    background: var(--charcoal-blue);
    border: 1px solid rgba(0,0,0,.06);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}
.admin-card__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--space-4);
}

.admin-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}
.admin-page-title,
.admin-page-header__title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: var(--space-1);
}
.admin-page-subtitle { font-size: .875rem; color: var(--aluminium-grey); }


/* ============================================================
   28. Admin Dashboard Cards
   ============================================================ */
.admin-stat-card {
    background: var(--charcoal-blue);
    border: 1px solid var(--dark-slate-blue);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-5);
}

.admin-stat-card__icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.admin-stat-card__icon--blue {
    background: rgba(107,159,255,.15);
    color: var(--info);
}

.admin-stat-card__icon--green {
    background: rgba(46,187,121,.15);
    color: var(--success);
}

.admin-stat-card__icon--orange {
    background: rgba(253,150,30,.15);
    color: var(--warning);
}

.admin-stat-card__icon--red {
    background: rgba(220,49,49,.15);
    color: var(--danger);
}

.admin-stat-card__value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-gray);
    line-height: 1;
}

.admin-stat-card__label {
    font-size: .8rem;
    color: var(--aluminium-grey);
    margin: 0;
}

.admin-stat-card:hover .admin-stat-card__value {
    color: var(--success) !important;
}

.admin-stat-card:hover div[style*="color:var(--dark-gray)"] {
    color: var(--success) !important;
}

.admin-stat-card:hover .admin-stat-card__label {
    color: var(--success);
}


/* ============================================================
   29. Empty States
   ============================================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-3);
    padding: var(--space-16) var(--space-6);
    max-width: 30rem;
    margin-inline: auto;
}

.empty-state__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 5rem;
    height: 5rem;
    border-radius: var(--radius-full);
    background: var(--slate-blue);
    color: var(--aluminium-grey);
    font-size: 2rem;          /* pro varianty s emoji místo SVG */
    line-height: 1;
    margin-bottom: var(--space-2);
}

.empty-state__title {
    font-family: var(--alt-font);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin: 0;
}

.empty-state__text {
    font-size: .95rem;
    color: var(--aluminium-grey);
    margin: 0;
    max-width: 40ch;
}

.empty-state .btn {
    margin-top: var(--space-3);
}

/* Menší varianta pro admin panely a oblasti uvnitř tabulek */
.empty-state--compact {
    padding: var(--space-8) var(--space-4);
    gap: var(--space-2);
}

.empty-state--compact .empty-state__icon {
    width: 3rem;
    height: 3rem;
    font-size: 1.4rem;
    margin-bottom: 0;
}

.empty-state--compact .empty-state__title { font-size: 1rem; }
.empty-state--compact .empty-state__text  { font-size: .875rem; }

@media (max-width: 600px) {
    .empty-state { padding: var(--space-10) var(--space-4); }
}


/* --- Category tabs --- */
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}
.category-tab {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: .85rem;
    font-weight: 500;
    color: var(--aluminium-grey);
    background: var(--charcoal-blue);
    border: 1px solid var(--charcoal-blue);
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
}
.category-tab:hover { background: var(--dark-slate-blue); color: var(--dark-gray); }
.category-tab--active {
    background: var(--electric-blue);
    color: var(--accent-ink);
    border-color: var(--electric-blue);
}