/* ============================================
   InveStellar Website - Component Styles
   Buttons, Cards, Forms, and UI Elements
   ============================================ */

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    padding: var(--space-md) var(--space-lg);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
    gap: var(--space-sm);
    position: relative;
    overflow: hidden;
}

/* Primary Button */
.btn--primary {
    background-color: var(--color-teal);
    color: var(--color-white);
    border-color: var(--color-teal);
    box-shadow: 0 4px 15px rgba(13, 148, 136, 0.3);
}

.btn--primary:hover {
    background-color: var(--color-teal-dark);
    border-color: var(--color-teal-dark);
    box-shadow: 0 8px 25px rgba(13, 148, 136, 0.4);
    transform: translateY(-3px);
}

.btn--primary:active {
    transform: translateY(-1px);
}

.btn--primary:focus-visible {
    outline: 2px solid var(--color-teal);
    outline-offset: 2px;
}

/* Secondary Button */
.btn--secondary {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
    border-width: 2px;
}

.btn--secondary:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: var(--color-white);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn--secondary:active {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(0);
}

/* Large Button */
.btn--large {
    padding: var(--space-md) var(--space-2xl);
    font-size: var(--font-size-base);
}

/* Small Button */
.btn--small {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-xs);
}

/* Button with Icon */
.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Disabled Button */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ============================================
   SERVICE CARDS
   ============================================ */

.service-card {
    background: var(--color-white);
    background-image: var(--gradient-card);
    border: 1px solid rgba(13, 148, 136, 0.1);
    border-radius: 12px;
    padding: var(--space-2xl);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-teal), var(--color-navy));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.service-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
    border-color: var(--color-teal);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card__icon {
    font-size: 3.5rem;
    margin-bottom: var(--space-lg);
    line-height: 1;
    display: inline-block;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(13, 148, 136, 0.1), rgba(26, 58, 82, 0.1));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-card__title {
    font-size: 22px;
    font-family: var(--font-serif);
    color: var(--color-navy);
    margin-bottom: var(--space-md);
    font-weight: 700;
}

.service-card__intro {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    font-weight: var(--font-weight-medium);
}

.service-card__content {
    flex-grow: 1;
    margin-bottom: var(--space-xl);
}

.service-card__content h4 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-navy);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.service-card__content h4:first-child {
    margin-top: 0;
}

.service-card__content ul {
    list-style: none;
    padding: 0;
}

.service-card__content li {
    padding-left: var(--space-lg);
    position: relative;
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.service-card__content li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: var(--font-weight-bold);
}

.service-card__cta {
    display: inline-block;
    padding: var(--space-md) var(--space-lg);
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
    align-self: flex-start;
}

.service-card__cta:hover {
    background-color: var(--color-accent-dark);
    transform: translateX(4px);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group--checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--space-sm);
    text-transform: capitalize;
}

.form-label-checkbox {
    font-weight: var(--font-weight-regular);
    cursor: pointer;
    color: var(--color-text-secondary);
    font-size: 14px;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background-color: #F8F9FA;
    border: 1px solid #E0E6ED;
    border-radius: 8px;
    transition: all 0.2s ease;
    appearance: none;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    background-color: var(--color-white);
    border-color: var(--color-teal);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-light);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-input:invalid:not(:placeholder-shown),
.form-textarea:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
}

.form-input:invalid:focus,
.form-textarea:invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-checkbox {
    appearance: none;
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-white);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.form-checkbox:checked {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.form-checkbox:checked::after {
    content: '✓';
    color: var(--color-white);
    font-size: 12px;
    font-weight: var(--font-weight-bold);
}

.form-checkbox:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.form-error {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-error);
    margin-top: var(--space-xs);
    min-height: 18px;
}

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

.form-message {
    margin-top: var(--space-md);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    text-align: center;
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-message.success {
    background-color: var(--color-teal-light);
    color: var(--color-teal-dark);
    border: 1px solid var(--color-teal);
}

.form-message.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

/* ============================================
   FORM LAYOUT
   ============================================ */

.contact__form {
    background-color: var(--color-white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
}

.contact__form h3 {
    font-size: 28px;
    color: var(--color-navy);
    margin-bottom: var(--space-xl);
    font-weight: 700;
}

/* ============================================
   INPUT SELECT STYLING
   ============================================ */

select.form-input {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%232D3E50' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: var(--space-2xl);
}

/* ============================================
   LINKS & TEXT UTILITIES
   ============================================ */

.link-underline {
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-underline-offset: 4px;
}

.link-underline:hover {
    text-decoration-color: var(--color-accent-dark);
}

.text-muted {
    color: var(--color-text-light);
}

.text-accent {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

.text-bold {
    font-weight: var(--font-weight-bold);
}

.text-center {
    text-align: center;
}

/* ============================================
   LOADING & STATES
   ============================================ */

.loading {
    opacity: 0.6;
    pointer-events: none;
}

.btn--loading {
    position: relative;
}

.btn--loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-in-up {
    animation: slideInUp 0.6s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

/* ============================================
   ELEVATION & DEPTH
   ============================================ */

.card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card--elevated {
    box-shadow: var(--shadow-lg);
}

/* ============================================
   BADGES & LABELS
   ============================================ */

.badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background-color: var(--color-teal-light);
    color: var(--color-teal-dark);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    white-space: nowrap;
}

.badge--accent {
    background-color: rgba(13, 148, 136, 0.1);
    color: var(--color-accent);
}

.badge--navy {
    background-color: rgba(26, 58, 82, 0.1);
    color: var(--color-navy);
}

/* ============================================
   DIVIDERS & SEPARATORS
   ============================================ */

.divider {
    height: 1px;
    background-color: var(--color-border);
    margin: var(--space-2xl) 0;
}

.divider--light {
    background-color: rgba(0, 0, 0, 0.05);
}

/* ============================================
   UTILITY SPACING
   ============================================ */

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.px-md { padding-left: var(--space-md); padding-right: var(--space-md); }
.py-lg { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }

/* ============================================
   VISIBILITY & DISPLAY
   ============================================ */

.hidden {
    display: none !important;
}

.invisible {
    visibility: hidden;
}

.block {
    display: block;
}

.flex {
    display: flex;
}

.inline-block {
    display: inline-block;
}

/* ============================================
   CURSOR STATES
   ============================================ */

.cursor-pointer {
    cursor: pointer;
}

.cursor-default {
    cursor: default;
}

.no-select {
    user-select: none;
}