/* ----------------------------------------------------
   1. DESIGN SYSTEM & RESET
   ---------------------------------------------------- */
:root {
    --bg-color: #0A0F1F;
    --card-bg: rgba(16, 22, 42, 0.85);
    --primary-orange: #ff7a00;
    --primary-orange-hover: #ff9233;
    --cyan-accent: #00d2ff;
    --text-white: #ffffff;
    --text-gray: #8f9cae;
    --text-dark: #0A0F1F;
    --error-red: #ff4a4a;
    --input-border: rgba(255, 255, 255, 0.12);
    --font-headings: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    /* Dark gradient overlay + brand background image from help_img */
    background-image: 
        radial-gradient(circle at center, rgba(13, 25, 47, 0.93) 0%, rgba(10, 15, 31, 0.99) 100%), 
        url('../help_img/bg.jpg');
    background-repeat: no-repeat;
    background-position: center center;
    background-attachment: fixed;
    background-size: cover;
    color: var(--text-white);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px 16px;
    overflow-x: hidden;
}

/* ----------------------------------------------------
   2. LAYOUT & CARD CONTAINER
   ---------------------------------------------------- */
main {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6), 
                inset 0 1px 1px rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

/* Premium Esports Accent Line at the top of the card */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--cyan-accent) 0%, var(--primary-orange) 100%);
}

/* ----------------------------------------------------
   3. BRANDING & HEADER
   ---------------------------------------------------- */
.logo-container {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.logo-img {
    height: 110px;
    width: auto;
    object-fit: contain;
    border: 2px solid rgba(255, 122, 0, 0.25);
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.04);
    border-color: var(--primary-orange);
    box-shadow: 0 8px 28px rgba(255, 122, 0, 0.4);
}

.form-title {
    font-family: var(--font-headings);
    font-weight: 800;
    font-size: 1.6rem;
    text-transform: uppercase;
    text-align: center;
    margin: 0 0 10px 0;
    background: linear-gradient(90deg, #ffffff 50%, var(--text-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.5px;
    line-height: 1.3;
}

.form-subtitle {
    font-size: 0.92rem;
    color: var(--text-gray);
    text-align: center;
    margin: 0 0 32px 0;
    line-height: 1.5;
}

/* ----------------------------------------------------
   4. FORM INPUTS & ELEMENTS
   ---------------------------------------------------- */
.form-group {
    margin-bottom: 22px;
    position: relative;
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--cyan-accent);
    margin-bottom: 8px;
}

.required-star {
    color: var(--primary-orange);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input {
    width: 100%;
    height: 52px;
    padding: 0 16px 0 44px;
    background: rgba(10, 15, 31, 0.7);
    border: 1.5px solid var(--input-border);
    border-radius: 12px;
    color: var(--text-white);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-sizing: border-box;
}

.form-input::placeholder {
    color: #4a5c73;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-orange);
    background: rgba(10, 15, 31, 0.85);
    box-shadow: 0 0 14px rgba(255, 122, 0, 0.2);
}

.input-icon {
    position: absolute;
    left: 16px;
    font-size: 1.1rem;
    color: #4a5c73;
    pointer-events: none;
    transition: color 0.25s ease;
}

.form-input:focus + .input-icon {
    color: var(--primary-orange);
}

/* ----------------------------------------------------
   5. ERROR HANDLING
   ---------------------------------------------------- */
.error-message {
    color: var(--error-red);
    font-size: 0.8rem;
    margin-top: 6px;
    display: none;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    animation: slideDown 0.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Error States for Inputs */
.form-group.has-error .form-input {
    border-color: var(--error-red);
    box-shadow: 0 0 8px rgba(255, 74, 74, 0.15);
}

.form-group.has-error .input-icon {
    color: var(--error-red);
}

.form-group.has-error .error-message {
    display: flex;
}

/* ----------------------------------------------------
   6. BUTTONS & ACTIONS
   ---------------------------------------------------- */
.submit-btn {
    width: 100%;
    height: 54px;
    background: var(--primary-orange);
    border: none;
    border-radius: 12px;
    color: var(--text-dark);
    font-family: var(--font-headings);
    font-weight: 800;
    font-size: 1.05rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(255, 122, 0, 0.2);
    margin-top: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.submit-btn:hover {
    background: var(--primary-orange-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 122, 0, 0.4);
}

.submit-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(255, 122, 0, 0.2);
}

.submit-btn:focus-visible {
    outline: 2px solid var(--text-white);
    outline-offset: 2px;
}

/* ----------------------------------------------------
   7. LEGAL CONSENT
   ---------------------------------------------------- */
.consent-text {
    font-size: 0.72rem;
    color: var(--text-gray);
    text-align: center;
    margin-top: 22px;
    line-height: 1.5;
}

.consent-link {
    color: var(--cyan-accent);
    text-decoration: none;
    border-bottom: 1px dashed rgba(0, 210, 255, 0.3);
    transition: all 0.2s ease;
}

.consent-link:hover {
    color: var(--primary-orange);
    border-bottom-color: rgba(255, 122, 0, 0.5);
}

/* ----------------------------------------------------
   8. SUCCESS STATE WINDOW
   ---------------------------------------------------- */
.success-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 10px 0;
    animation: scaleIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.success-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(0, 210, 255, 0.1);
    border: 3px solid var(--cyan-accent);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 24px;
    box-shadow: 0 0 20px rgba(0, 210, 255, 0.25);
}

.success-icon {
    font-size: 2.5rem;
    color: var(--cyan-accent);
    font-weight: bold;
}

.success-title {
    font-family: var(--font-headings);
    font-size: 1.7rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--primary-orange);
    margin: 0 0 16px 0;
    letter-spacing: 0.5px;
}

.success-text {
    font-size: 0.95rem;
    color: #b8c7db;
    line-height: 1.6;
    margin: 0 0 32px 0;
}

.reset-btn {
    width: 100%;
    height: 52px;
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    color: var(--text-white);
    font-family: var(--font-headings);
    font-weight: 700;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.reset-btn:hover {
    border-color: var(--cyan-accent);
    color: var(--cyan-accent);
    background: rgba(0, 210, 255, 0.05);
    box-shadow: 0 0 12px rgba(0, 210, 255, 0.15);
}

/* ----------------------------------------------------
   10. CUSTOM CHECKBOXES
   ---------------------------------------------------- */
.checkbox-group {
    margin-bottom: 18px;
    position: relative;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    user-select: none;
    font-size: 0.85rem;
    color: var(--text-gray);
    line-height: 1.4;
}

/* Hide default checkbox */
.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

/* Custom checkbox indicator */
.checkbox-custom {
    flex-shrink: 0;
    height: 20px;
    width: 20px;
    background: rgba(10, 15, 31, 0.7);
    border: 1.5px solid var(--input-border);
    border-radius: 6px;
    margin-right: 12px;
    position: relative;
    transition: all 0.2s ease;
    margin-top: 1px;
}

/* On hover */
.checkbox-label:hover .checkbox-custom {
    border-color: var(--cyan-accent);
    box-shadow: 0 0 8px rgba(0, 210, 255, 0.2);
}

/* Checked state background */
.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom {
    background: var(--primary-orange);
    border-color: var(--primary-orange);
    box-shadow: 0 0 10px rgba(255, 122, 0, 0.3);
}

/* Custom checkmark symbol */
.checkbox-custom::after {
    content: '';
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid var(--text-dark);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Show checkmark when checked */
.checkbox-label input[type="checkbox"]:checked ~ .checkbox-custom::after {
    display: block;
}

/* Focus outline for accessibility */
.checkbox-label input[type="checkbox"]:focus-visible ~ .checkbox-custom {
    outline: 2px solid var(--text-white);
    outline-offset: 2px;
}

/* Error States for Checkboxes */
.checkbox-group.has-error .checkbox-custom {
    border-color: var(--error-red);
    box-shadow: 0 0 8px rgba(255, 74, 74, 0.2);
}
.checkbox-group.has-error .error-message {
    display: flex;
    margin-left: 32px; /* Aligns error text with checkbox text label */
}

/* ----------------------------------------------------
   9. RESPONSIVE DESIGN
   ---------------------------------------------------- */
@media (max-width: 480px) {
    body {
        padding: 16px 8px;
    }
    .card {
        padding: 30px 20px;
        border-radius: 20px;
    }
    .form-title {
        font-size: 1.35rem;
    }
    .form-subtitle {
        font-size: 0.85rem;
        margin-bottom: 24px;
    }
    .logo-img {
        height: 90px;
    }
    .form-input {
        height: 48px;
        font-size: 0.9rem;
    }
    .submit-btn {
        height: 50px;
        font-size: 0.95rem;
    }
}

/* ----------------------------------------------------
   11. VISUAL POLISH (анимации и «живой» неон)
   ---------------------------------------------------- */

/* Плавное появление карточки при загрузке */
@keyframes cardIn {
    from { opacity: 0; transform: translateY(24px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
.card {
    animation: cardIn 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Бегущий градиент в верхней акцент-линии */
@keyframes accentFlow {
    0%   { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}
.card::before {
    background: linear-gradient(90deg,
        var(--cyan-accent) 0%, var(--primary-orange) 50%, var(--cyan-accent) 100%);
    background-size: 200% 100%;
    animation: accentFlow 4s linear infinite;
}

/* Каскадное появление полей формы */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}
#formContainer .form-group,
#formContainer .checkbox-group,
#formContainer .submit-btn {
    animation: fadeUp 0.5s ease both;
}
#formContainer .form-group:nth-of-type(1) { animation-delay: 0.10s; }
#formContainer .form-group:nth-of-type(2) { animation-delay: 0.16s; }
#formContainer .form-group:nth-of-type(3) { animation-delay: 0.22s; }
#formContainer .form-group:nth-of-type(4) { animation-delay: 0.28s; }
#formContainer .checkbox-group { animation-delay: 0.34s; }
#formContainer .submit-btn { animation-delay: 0.42s; }

/* Мягкое пульсирующее свечение логотипа */
@keyframes logoGlow {
    0%, 100% { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5); }
    50%      { box-shadow: 0 8px 30px rgba(255, 122, 0, 0.35); }
}
.logo-img {
    animation: logoGlow 3.5s ease-in-out infinite;
}

/* Световой блик, пробегающий по кнопке при наведении */
.submit-btn {
    position: relative;
    overflow: hidden;
}
.submit-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -120%;
    width: 60%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.45), transparent);
    transform: skewX(-20deg);
    transition: left 0.6s ease;
}
.submit-btn:hover::after {
    left: 130%;
}

/* Спиннер в кнопке во время отправки (класс .loading добавляется из script.js) */
@keyframes spin { to { transform: rotate(360deg); } }
.submit-btn.loading {
    pointer-events: none;
    opacity: 0.85;
}
.submit-btn.loading::before {
    content: '';
    width: 18px;
    height: 18px;
    margin-right: 10px;
    border: 2.5px solid rgba(10, 15, 31, 0.35);
    border-top-color: var(--text-dark);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

/* Уважаем системную настройку «уменьшить движение» */
@media (prefers-reduced-motion: reduce) {
    .card,
    .card::before,
    #formContainer .form-group,
    #formContainer .checkbox-group,
    #formContainer .submit-btn,
    .logo-img {
        animation: none !important;
    }
    .submit-btn::after { display: none; }
}

/* ----------------------------------------------------
   12. ПРОМОКОД НА ЭКРАНЕ УСПЕХА
   ---------------------------------------------------- */
.promo-box {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    width: 100%;
    background: rgba(255, 122, 0, 0.08);
    border: 1.5px dashed var(--primary-orange);
    border-radius: 14px;
    padding: 16px 20px;
    margin: 0 0 24px;
    animation: scaleIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.promo-label {
    font-size: 0.78rem;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: center;
}
.promo-code {
    font-family: var(--font-headings);
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--primary-orange);
    letter-spacing: 1.5px;
}
.promo-hint {
    font-size: 0.76rem;
    color: var(--text-gray);
    text-align: center;
}

/* ----------------------------------------------------
   13. КОНФЕТТИ (салют при успешной отправке)
   ---------------------------------------------------- */
.confetti-piece {
    position: fixed;
    top: -14px;
    z-index: 9999;
    border-radius: 2px;
    pointer-events: none;
    animation-name: confetti-fall;
    animation-timing-function: cubic-bezier(0.2, 0.6, 0.4, 1);
    animation-fill-mode: forwards;
}
@keyframes confetti-fall {
    0%   { transform: translateY(-10px) rotate(0deg); opacity: 1; }
    100% { transform: translateY(105vh) rotate(720deg); opacity: 0.9; }
}
@media (prefers-reduced-motion: reduce) {
    .confetti-piece { display: none; }
    .promo-box { animation: none; }
}