/**
 * WhatsApp Business API - BhashSMS Platform
 * Custom Styles
 * Modern, Responsive & Creative UI
 */

:root {
    --primary-color: #25D366;
    --secondary-color: #128C7E;
    --accent-color: #075E54;
    --facebook-blue: #1877F2;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --purple-color: #7c3aed;
    --dark-color: #1a1a2e;
    --light-color: #f8f9fa;
    --white-color: #ffffff;
    --text-dark: #2d3748;
    --text-muted: #718096;
    --border-radius: 16px;
    --box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-dark);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Navbar Styles */
.navbar {
    padding: 1rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%) !important;
}

.navbar-brand {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
}

.navbar-brand i {
    font-size: 2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.nav-link {
    font-weight: 500;
    margin: 0 0.5rem;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--white-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -50px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.hero-content {
    color: var(--white-color);
}

.badge {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
}

.text-gradient {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-list {
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(10px);
}

.feature-item i {
    font-size: 1.5rem;
    margin-right: 1rem;
}

.feature-item span {
    color: var(--white-color);
    font-weight: 500;
}

/* Signup Card */
.signup-card {
    background: var(--white-color);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
    animation: slideInRight 0.8s ease-out;
    z-index: 1;
}

.signup-card form,
.signup-card .signup-header {
    position: relative;
    z-index: 10;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(37, 211, 102, 0.1), transparent);
    animation: rotate 10s linear infinite;
    pointer-events: none;
    z-index: 0;
}

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

.icon-wrapper {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.3);
}

.icon-wrapper i {
    font-size: 2.5rem;
    color: var(--white-color);
}

.form-control,
.form-select {
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 0.75rem 1rem;
    transition: var(--transition);
    font-size: 1rem;
    background-color: #ffffff;
    color: #2d3748;
    cursor: text;
}

.form-control:hover,
.form-select:hover {
    border-color: #cbd5e0;
    background-color: #ffffff;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37, 211, 102, 0.25);
    outline: none;
    background-color: #ffffff;
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.form-label i {
    color: var(--primary-color);
}

.password-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.password-toggle:hover {
    color: var(--primary-color);
}

.btn {
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white-color);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
}

.btn-facebook {
    background: linear-gradient(135deg, #1877F2, #0d5fc7);
    color: var(--white-color);
}

.btn-facebook:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(24, 119, 242, 0.4);
}

.btn-facebook:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.divider {
    position: relative;
    text-align: center;
    margin: 1.5rem 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e2e8f0;
}

.divider span {
    position: relative;
    background: var(--white-color);
    padding: 0 1rem;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Features Section */
.features-section {
    background: var(--white-color);
    padding: 5rem 0;
}

.feature-card {
    background: var(--white-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    height: 100%;
    border: 1px solid #e2e8f0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.8rem;
    color: var(--white-color);
}

.feature-icon.bg-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.feature-icon.bg-success {
    background: linear-gradient(135deg, #28a745, #20c997);
}

.feature-icon.bg-info {
    background: linear-gradient(135deg, #17a2b8, #138496);
}

.feature-icon.bg-warning {
    background: linear-gradient(135deg, #ffc107, #ff9800);
}

.feature-icon.bg-danger {
    background: linear-gradient(135deg, #dc3545, #c82333);
}

.feature-icon.bg-purple {
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
}

.feature-card h4 {
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-muted);
    margin-bottom: 0;
}

/* How It Works Section */
.how-it-works-section {
    padding: 5rem 0;
}

.step-card {
    background: var(--white-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    height: 100%;
    position: relative;
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: 0 5px 15px rgba(37, 211, 102, 0.4);
}

.step-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin: 2rem 0 1rem;
}

.step-card h5 {
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.step-card p {
    color: var(--text-muted);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Footer */
.footer {
    background: #1a1a2e;
}

/* Alert Styles */
.alert {
    border-radius: 12px;
    border: none;
    padding: 1rem 1.25rem;
    margin-top: 1rem;
    animation: slideInDown 0.5s ease-out;
}

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

/* Loading Spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.2em;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-section {
        padding: 100px 0 60px;
    }
    
    .hero-content {
        text-align: center;
        margin-bottom: 3rem;
    }
    
    .signup-card {
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .lead {
        font-size: 1rem;
    }
    
    .feature-item {
        font-size: 0.9rem;
    }
    
    .signup-card {
        padding: 1.5rem;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Utility Classes */
.bg-primary-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%) !important;
}

.text-primary {
    color: var(--primary-color) !important;
}

.fw-bold {
    font-weight: 700 !important;
}