/* ============================================
   GLOBAL RESET & BASE STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--color-primary-dark);
}

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text);
    line-height: 1.3;
    font-weight: 600;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

@media (min-width: 768px) {
    h1 { font-size: var(--text-5xl); }
    h2 { font-size: var(--text-4xl); }
    h3 { font-size: var(--text-3xl); }
}

@media (min-width: 1200px) {
    h1 { font-size: var(--text-6xl); }
}

p {
    margin-bottom: var(--space-4);
    color: var(--color-text-secondary);
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-8);
    }
}

.container--narrow {
    max-width: var(--container-narrow);
}

.section {
    padding: var(--space-16) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--space-20) 0;
    }
}

@media (min-width: 1200px) {
    .section {
        padding: var(--space-24) 0;
    }
}

.section--alt {
    background-color: var(--color-bg-alt);
}

.section--dark {
    background-color: var(--color-primary-dark);
    color: var(--color-text-on-primary);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
    color: var(--color-text-on-primary);
}

.section--dark p {
    color: var(--color-text-on-dark);
}

/* ============================================
   SECTION HEADER
   ============================================ */

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header__label {
    display: inline-block;
    font-family: var(--font-accent);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.section-header__title {
    margin-bottom: var(--space-4);
}

.section-header__divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    margin: var(--space-4) auto;
    border-radius: var(--radius-full);
}

.section-header__subtitle {
    max-width: 600px;
    margin: 0 auto;
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-8);
    font-family: var(--font-accent);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-text-on-primary);
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-text-on-primary);
}

.btn--secondary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--secondary:hover {
    background: var(--color-primary);
    color: var(--color-text-on-primary);
    transform: translateY(-2px);
}

.btn--accent {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: var(--color-text);
    border-color: var(--color-accent);
}

.btn--accent:hover {
    background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--white {
    background: var(--color-surface);
    color: var(--color-primary);
    border-color: var(--color-surface);
}

.btn--white:hover {
    background: transparent;
    color: var(--color-surface);
    border-color: var(--color-surface);
}

.btn--lg {
    padding: var(--space-4) var(--space-10);
    font-size: var(--text-lg);
}

.btn--sm {
    padding: var(--space-2) var(--space-6);
    font-size: var(--text-sm);
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    border: 1px solid var(--color-border-light);
}

.card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}

.card__icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(45, 106, 79, 0.1), rgba(82, 183, 136, 0.1));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
    font-size: 28px;
}

.card__title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-3);
    color: var(--color-text);
}

.card__text {
    color: var(--color-text-secondary);
    font-size: var(--text-base);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ============================================
   GRID LAYOUTS
   ============================================ */

.grid {
    display: grid;
    gap: var(--space-8);
}

.grid--2 {
    grid-template-columns: 1fr;
}

.grid--3 {
    grid-template-columns: 1fr;
}

.grid--4 {
    grid-template-columns: 1fr;
}

@media (min-width: 576px) {
    .grid--2 { grid-template-columns: repeat(2, 1fr); }
    .grid--3 { grid-template-columns: repeat(2, 1fr); }
    .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 992px) {
    .grid--3 { grid-template-columns: repeat(3, 1fr); }
    .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ============================================
   IMAGE PLACEHOLDERS
   ============================================ */

.img-placeholder {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--text-4xl);
    min-height: 250px;
    position: relative;
    overflow: hidden;
}

.img-placeholder::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

.delay-1 { transition-delay: 100ms; }
.delay-2 { transition-delay: 200ms; }
.delay-3 { transition-delay: 300ms; }
.delay-4 { transition-delay: 400ms; }

/* ============================================
   LOADING SCREEN
   ============================================ */

.loading-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    gap: var(--space-4);
    color: var(--color-primary);
    font-family: var(--font-accent);
}

.loading-ball-img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    animation: bounce 0.6s ease-in-out infinite alternate;
}

@keyframes bounce {
    from { transform: translateY(0); }
    to { transform: translateY(-20px); }
}

/* ============================================
   BLAZOR ERROR UI
   ============================================ */

#blazor-error-ui {
    background: var(--color-error);
    color: white;
    padding: var(--space-3) var(--space-6);
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: none;
    text-align: center;
    font-family: var(--font-body);
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: var(--space-4);
    top: var(--space-2);
    color: white;
}

.blazor-error-boundary {
    background: var(--color-error);
    padding: 1rem;
    color: white;
    border-radius: var(--radius-md);
}

.blazor-error-boundary::after {
    content: "Wystąpił błąd.";
}

/* ============================================
   FORM STYLES
   ============================================ */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-family: var(--font-accent);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    color: var(--color-text);
    background: var(--color-surface);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.15);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.form-checkbox__label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.validation-message {
    color: var(--color-error);
    font-size: var(--text-sm);
    margin-top: var(--space-1);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--color-primary) !important; }
.text-accent { color: var(--color-accent) !important; }
.font-heading { font-family: var(--font-heading); }
.font-accent { font-family: var(--font-accent); }

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ============================================
   NAVBAR (global - not scoped, to work with JS)
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    padding: var(--space-4) 0;
    transition: all var(--transition-base);
    background: transparent;
}

.navbar.scrolled,
.navbar.menu-open {
    background: rgba(27, 67, 50, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar.scrolled {
    padding: var(--space-2) 0;
    box-shadow: var(--shadow-lg);
}

.navbar-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: white;
    z-index: calc(var(--z-mobile-menu) + 1);
    cursor: pointer;
}

.navbar-logo__icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-accent);
    font-weight: 700;
    font-size: var(--text-lg);
    color: var(--color-primary-dark);
}

.navbar-logo__text {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: white;
}

/* Desktop nav links */
.navbar-links {
    display: none;
    align-items: center;
    gap: var(--space-1);
    list-style: none;
    margin: 0;
    padding: 0;
}

@media (min-width: 1100px) {
    .navbar-links {
        display: flex;
    }
}

.navbar-link {
    font-family: var(--font-accent);
    font-size: var(--text-sm);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85) !important;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
}

.navbar-link:hover {
    color: white !important;
    background: rgba(255, 255, 255, 0.1);
}

/* Actions (CTA + hamburger) */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    z-index: calc(var(--z-mobile-menu) + 1);
}

.navbar-cta {
    display: none;
}

@media (min-width: 1100px) {
    .navbar-cta {
        display: inline-flex;
    }
}

/* Hamburger button */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

@media (min-width: 1100px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

.mobile-menu-btn.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-btn.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Full-screen mobile overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(27, 67, 50, 0.98);
    z-index: calc(var(--z-mobile-menu) - 1);
    display: none;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-menu-overlay.open {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.mobile-menu-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    padding-top: var(--space-8);
}

.mobile-menu-link {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
    cursor: pointer;
}

.mobile-menu-link:hover {
    color: var(--color-accent-light);
}

.mobile-menu-cta {
    margin-top: var(--space-4);
}