/* ======================================================
   NEWSLETTER SECTION - MODERN & PROFESSIONAL
   ====================================================== */

/* Newsletter colour palette now supplied by the central theme bridge (theme.css) */

/* Newsletter Section */
.newsletter-section {
    position: relative;
    padding: 80px 0 100px;
    background: linear-gradient(
        135deg,
        var(--z-bg) 0%,
        var(--z-surface-1) 40%,
        var(--z-surface-3) 100%
    );
    overflow: hidden;
    z-index: 5;
}

/* Animated Background Effects */
.newsletter-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 25% 25%, var(--z-accent-glow) 0%, transparent 50%),
        radial-gradient(ellipse at 75% 75%, var(--z-accent-glow) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, var(--z-accent-glow) 0%, transparent 50%);
    z-index: 1;
}

.newsletter-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(1px 1px at 30px 40px, rgba(255, 255, 255, 0.03), transparent),
        radial-gradient(1px 1px at 70px 80px, rgba(255, 255, 255, 0.02), transparent);
    background-repeat: repeat;
    background-size: 100px 80px;
    animation: newsletterParticleFloat 20s linear infinite;
    z-index: 1;
}

@keyframes newsletterParticleFloat {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-80px); }
}

/* Enhanced Container */
.newsletter-section .container {
    position: relative;
    z-index: 2;
}

/* Newsletter Content */
.newsletter-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

/* Newsletter Text Section */
.newsletter-text {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.newsletter-text h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--newsletter-text-primary);
    margin: 0;
    line-height: 1.2;
    position: relative;
}

.newsletter-text h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--newsletter-accent), var(--newsletter-accent-light));
    border-radius: 2px;
    animation: titleUnderlineGrow 2s ease-out 0.5s forwards;
}

@keyframes titleUnderlineGrow {
    0% { width: 0; }
    100% { width: 80px; }
}

.newsletter-text p {
    font-size: 1.125rem;
    color: var(--newsletter-text-secondary);
    line-height: 1.6;
    margin: 0;
    max-width: 500px;
}

/* Newsletter Features */
.newsletter-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.feature:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--z-accent);
    transform: translateX(4px);
}

.feature i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--newsletter-accent), var(--newsletter-accent-light));
    border-radius: 8px;
    color: var(--newsletter-primary);
    font-size: 0.875rem;
    flex-shrink: 0;
}

.feature span {
    font-size: 0.9375rem;
    color: var(--newsletter-text-primary);
    font-weight: 500;
}

/* Newsletter Form */
.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.newsletter-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--z-accent-glow) 50%,
        transparent 100%
    );
}

/* Form Group */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Input Wrapper */
.input-wrapper {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.input-wrapper:hover {
    border-color: var(--z-accent);
    background: rgba(255, 255, 255, 0.08);
}

.input-wrapper:focus-within {
    border-color: var(--newsletter-accent);
    box-shadow: 0 0 0 3px var(--z-accent-glow);
    background: rgba(255, 255, 255, 0.08);
}

/* Email Input */
.input-wrapper input[type="email"] {
    flex: 1;
    padding: 1rem 1.25rem;
    background: transparent;
    border: none;
    outline: none;
    font-size: 1rem;
    color: var(--newsletter-text-primary);
    font-weight: 500;
}

.input-wrapper input[type="email"]::placeholder {
    color: var(--newsletter-text-muted);
    opacity: 0.8;
}

/* Submit Button */
.submit-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--newsletter-accent), var(--newsletter-accent-light));
    border: none;
    color: var(--newsletter-primary);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--z-accent-glow);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn i {
    transition: transform 0.3s ease;
    font-size: 0.875rem;
}

.submit-btn:hover i {
    transform: translateX(2px);
}

/* Loading State */
.submit-btn.loading {
    pointer-events: none;
    opacity: 0.8;
}

.submit-btn.loading span {
    opacity: 0;
}

.submit-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid var(--z-glass);
    border-top: 2px solid var(--newsletter-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Consent Label */
.consent-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    user-select: none;
    line-height: 1.5;
}

.consent-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

/* Custom Checkbox */
.checkmark {
    position: relative;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-top: 2px;
}

.checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid var(--newsletter-primary);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform 0.2s ease;
}

.consent-label input[type="checkbox"]:checked + .checkmark {
    background: var(--newsletter-accent);
    border-color: var(--newsletter-accent);
}

.consent-label input[type="checkbox"]:checked + .checkmark::after {
    transform: rotate(45deg) scale(1);
}

.consent-label:hover .checkmark {
    border-color: var(--newsletter-accent);
}

/* Consent Text */
.consent-text {
    font-size: 0.8125rem;
    color: var(--newsletter-text-secondary);
    line-height: 1.5;
}

.consent-text a {
    color: var(--newsletter-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.consent-text a:hover {
    color: var(--newsletter-accent-light);
    text-decoration: underline;
}

/* Success State */
.newsletter-form.success {
    background: linear-gradient(145deg, var(--z-success-bg) 0%, var(--z-success-bg) 100%);
    border-color: var(--z-success);
}

.newsletter-form.success::before {
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--z-success) 50%,
        transparent 100%
    );
}

/* Error State */
.newsletter-form.error {
    background: linear-gradient(145deg, var(--z-danger-bg) 0%, var(--z-danger-bg) 100%);
    border-color: var(--z-danger);
}

.newsletter-form.error::before {
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--z-danger) 50%,
        transparent 100%
    );
}

/* Success Message */
.success-message {
    display: none;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--z-success-bg);
    border: 1px solid var(--z-success);
    border-radius: 12px;
    color: var(--newsletter-success);
    font-weight: 500;
    animation: slideInUp 0.5s ease;
}

.success-message.show {
    display: flex;
}

.success-message i {
    font-size: 1.125rem;
}

/* Error Message */
.error-message {
    display: none;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--z-danger-bg);
    border: 1px solid var(--z-danger);
    border-radius: 12px;
    color: var(--newsletter-error);
    font-weight: 500;
    animation: slideInUp 0.5s ease;
}

.error-message.show {
    display: flex;
}

.error-message i {
    font-size: 1.125rem;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Newsletter Toast Notifications */
.newsletter-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.9) 100%);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(20px);
    z-index: 10000;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 400px;
    color: var(--newsletter-primary);
}

.newsletter-toast.show {
    transform: translateX(0);
    opacity: 1;
}

.newsletter-toast.success {
    border-color: var(--z-success);
}

.newsletter-toast.error {
    border-color: var(--z-danger);
}

.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
}

.toast-icon.success {
    background: var(--newsletter-success);
    color: white;
}

.toast-icon.error {
    background: var(--newsletter-error);
    color: white;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin: 0 0 0.25rem 0;
    font-size: 0.9375rem;
}

.toast-message {
    font-size: 0.8125rem;
    color: var(--z-overlay);
    margin: 0;
    line-height: 1.4;
}

.toast-close {
    background: none;
    border: none;
    color: var(--z-glass);
    cursor: pointer;
    font-size: 1.125rem;
    padding: 0.25rem;
    transition: color 0.3s ease;
}

.toast-close:hover {
    color: var(--z-overlay);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .newsletter-content {
        gap: 3rem;
    }
    
    .newsletter-form {
        padding: 1.75rem;
    }
}

@media (max-width: 992px) {
    .newsletter-section {
        padding: 60px 0 80px;
    }
    
    .newsletter-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }
    
    .newsletter-text p {
        max-width: 600px;
        margin: 0 auto;
    }
    
    .newsletter-features {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .newsletter-form {
        max-width: 500px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .newsletter-section {
        padding: 50px 0 60px;
    }
    
    .newsletter-content {
        gap: 2rem;
    }
    
    .newsletter-text h2 {
        font-size: 1.75rem;
    }
    
    .newsletter-form {
        padding: 1.5rem;
    }
    
    .input-wrapper {
        flex-direction: column;
        align-items: stretch;
    }
    
    .input-wrapper input[type="email"] {
        padding: 0.875rem 1rem;
    }
    
    .submit-btn {
        padding: 0.875rem 1.25rem;
        border-radius: 0 0 8px 8px;
    }
    
    .newsletter-toast {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
        transform: translateY(-100px);
    }
    
    .newsletter-toast.show {
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    .newsletter-form {
        padding: 1.25rem;
    }
    
    .feature {
        padding: 0.625rem;
    }
    
    .feature i {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }
    
    .consent-label {
        gap: 0.625rem;
    }
    
    .checkmark {
        width: 18px;
        height: 18px;
    }
}

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
    .newsletter-section::after,
    .title-underline,
    .submit-btn::before,
    .newsletter-toast,
    .success-message,
    .error-message {
        animation: none;
        transition: none;
    }
    
    .feature:hover {
        transform: none;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .newsletter-section::before,
    .newsletter-section::after {
        display: none;
    }
    
    .newsletter-form,
    .feature,
    .input-wrapper {
        border-color: var(--newsletter-text-secondary);
        background: var(--newsletter-primary);
    }
}

/* Print Styles */
@media print {
    .newsletter-section {
        background: white !important;
        color: black !important;
    }
    
    .newsletter-form {
        border: 2px solid black;
        background: white !important;
    }
    
    .submit-btn {
        background: black !important;
        color: white !important;
    }
}

/* Focus Styles for Accessibility */
.submit-btn:focus,
.consent-label:focus-within,
.input-wrapper:focus-within {
    outline: 2px solid var(--newsletter-accent);
    outline-offset: 2px;
}

/* GPU Acceleration */
.newsletter-form,
.feature,
.submit-btn,
.newsletter-toast {
    will-change: transform;
    transform: translateZ(0);
}