/* ============================================
   Nexora EDS v2 — Components (Midnight Aurora)
   ============================================ */

/* ── Кнопки ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* Primary — gradient */
.btn-primary {
    background: var(--gradient-aurora);
    color: #FFFFFF;
    border: none;
    box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-primary:hover {
    box-shadow: 0 4px 20px var(--accent-glow-strong);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px var(--accent-glow);
}

/* Shimmer effect on primary */
.btn-primary::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::after {
    left: 100%;
}

/* Secondary */
.btn-secondary {
    background-color: transparent;
    color: var(--text-secondary);
    border-color: var(--border-secondary);
}

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

/* Ghost */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
}

.btn-ghost:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.btn-lg {
    padding: 13px 28px;
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn .btn-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #FFFFFF;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* ── Инпуты ── */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}

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

.form-input-wrapper .input-icon {
    position: absolute;
    left: 14px;
    width: 18px;
    height: 18px;
    color: var(--text-tertiary);
    pointer-events: none;
    transition: color var(--transition-fast);
}

.form-input-wrapper .input-icon-right {
    position: absolute;
    right: 14px;
    width: 18px;
    height: 18px;
    color: var(--text-tertiary);
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.form-input-wrapper .input-icon-right:hover {
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 12px 14px;
    font-size: var(--text-sm);
    color: var(--input-text);
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--transition-fast);
}

.form-input::placeholder {
    color: var(--input-placeholder);
}

.form-input:hover {
    border-color: var(--input-border-hover);
}

.form-input:focus {
    border-color: var(--input-border-focus);
    box-shadow: var(--input-glow);
}

.form-input.has-icon-left {
    padding-left: 44px;
}

.form-input.has-icon-right {
    padding-right: 44px;
}

.form-input.is-error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px var(--color-error-soft);
}

.form-input:focus ~ .input-icon {
    color: var(--accent-primary);
}

.form-error {
    font-size: var(--text-xs);
    color: var(--color-error);
    display: none;
}

.form-error.visible {
    display: block;
}

/* ── Чекбокс ── */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.checkbox-wrapper input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--input-border);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--input-bg);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-wrapper:hover .checkbox-custom {
    border-color: var(--accent-primary);
}

.checkbox-wrapper input:checked + .checkbox-custom {
    background: var(--gradient-aurora);
    border-color: transparent;
}

.checkbox-custom svg {
    width: 12px;
    height: 12px;
    color: #fff;
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--transition-fast);
}

.checkbox-wrapper input:checked + .checkbox-custom svg {
    opacity: 1;
    transform: scale(1);
}

.checkbox-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* ── Карточка ── */
.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
    border-color: var(--card-border-hover);
}

/* ── Переключатель темы ── */
.theme-toggle {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: none;
    border: 1px solid var(--border-primary);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--bg-hover);
    color: var(--accent-primary);
    border-color: var(--border-hover);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    position: absolute;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

[data-theme="light"] .theme-toggle .icon-sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}
[data-theme="light"] .theme-toggle .icon-moon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}
[data-theme="dark"] .theme-toggle .icon-sun {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}
[data-theme="dark"] .theme-toggle .icon-moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}