/* Modern Button Styles for Login, Register, and CTA Buttons
 * Clean, professional design with smooth animations
 */

:root {
    --btn-primary: #28a745;
    --btn-primary-hover: #218838;
    --btn-primary-active: #1e7e34;
    --btn-secondary: #6c757d;
    --btn-secondary-hover: #5a6268;
    --btn-outline: #28a745;
    --btn-gradient-start: #28a745;
    --btn-gradient-end: #20c997;
    --btn-shadow: 0 4px 14px 0 rgba(40, 167, 69, 0.25);
    --btn-shadow-hover: 0 6px 20px 0 rgba(40, 167, 69, 0.35);
    --btn-radius: 12px;
    --btn-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Modern Button Styles */
.btn-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    border: none;
    border-radius: var(--btn-radius);
    cursor: pointer;
    transition: var(--btn-transition);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    user-select: none;
    text-transform: none;
    letter-spacing: 0.025em;
}

.btn-modern:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.2);
}

.btn-modern:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Primary Button - Login */
.btn-login {
    background: linear-gradient(135deg, var(--btn-primary) 0%, var(--btn-primary-hover) 100%);
    color: white;
    box-shadow: var(--btn-shadow);
    border: 2px solid transparent;
}

.btn-login:hover {
    background: linear-gradient(135deg, var(--btn-primary-hover) 0%, var(--btn-primary-active) 100%);
    box-shadow: var(--btn-shadow-hover);
    transform: translateY(-2px);
    color: white;
    text-decoration: none;
}

.btn-login:active {
    transform: translateY(0);
    box-shadow: var(--btn-shadow);
}

/* Register Button - Outlined Style */
.btn-register {
    background: transparent;
    color: var(--btn-outline);
    border: 2px solid var(--btn-outline);
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.1);
}

.btn-register:hover {
    background: var(--btn-outline);
    color: white;
    box-shadow: var(--btn-shadow-hover);
    transform: translateY(-2px);
    text-decoration: none;
}

.btn-register:active {
    transform: translateY(0);
    box-shadow: var(--btn-shadow);
}

/* Become an Entrepreneur - Premium Gradient */
.btn-entrepreneur {
    background: linear-gradient(135deg, var(--btn-gradient-start) 0%, var(--btn-gradient-end) 100%);
    color: white;
    box-shadow: var(--btn-shadow);
    border: 2px solid transparent;
    position: relative;
}

.btn-entrepreneur::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--btn-gradient-end) 0%, var(--btn-gradient-start) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--btn-radius);
}

.btn-entrepreneur:hover {
    box-shadow: var(--btn-shadow-hover);
    transform: translateY(-2px);
    color: white;
    text-decoration: none;
}

.btn-entrepreneur:hover::before {
    opacity: 1;
}

.btn-entrepreneur span,
.btn-entrepreneur i {
    position: relative;
    z-index: 1;
}

/* Large Button Variations */
.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    border-radius: 14px;
}

/* Small Button Variations */
.btn-sm {
    padding: 0.5rem 1.5rem;
    font-size: 0.875rem;
    border-radius: 10px;
}

/* Icon Buttons */
.btn-icon {
    padding: 0.875rem 1.5rem;
}

.btn-icon i {
    font-size: 1.1em;
}

/* Button Groups */
.btn-group {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.btn-group.centered {
    justify-content: center;
}

.btn-group.spaced {
    gap: 1.5rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .btn-modern {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .btn-lg {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
    
    .btn-group {
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
    }
    
    .btn-group .btn-modern {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .btn-modern {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
    }
}

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

.btn-modern.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    margin: auto;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Success State */
.btn-modern.success {
    background: #28a745 !important;
    border-color: #28a745 !important;
}

.btn-modern.success::before {
    display: none;
}

/* Accessibility Improvements */
.btn-modern:focus-visible {
    outline: 2px solid var(--btn-primary);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .btn-modern {
        border-width: 2px;
        font-weight: 700;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .btn-modern {
        transition: none;
    }
    
    .btn-modern:hover {
        transform: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --btn-shadow: 0 4px 14px 0 rgba(40, 167, 69, 0.4);
        --btn-shadow-hover: 0 6px 20px 0 rgba(40, 167, 69, 0.5);
    }
}