/**
 * Calculators Page Styles
 * Version: 1.0.0
 * Author: EdSys Development Team
 * Description: Styles for calculators page with mobile-first approach
 */

/* Import CSS variables from global system */
@import url("../local/templates/main/css/variables.css");

/* ========================================
   MAIN LAYOUT
   ======================================== */

.edsys-calculators-main {
    min-height: 100vh;
    padding-top: var(--space-md);
    padding-bottom: var(--space-3xl);
}

.edsys-calculators-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========================================
   HERO SECTION
   ======================================== */

.edsys-calculators-hero {
    background: linear-gradient(135deg,
    var(--edsys-bg-light) 0%,
    var(--edsys-surface) 100%);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl) var(--space-lg);
    margin-bottom: var(--space-3xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.edsys-calculators-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e0e0e0" stroke-width="0.5"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
    z-index: 1;
}

.edsys-calculators-hero__title {
    font-size: var(--edsys-fs-hero);
    font-weight: var(--edsys-font-bold);
    color: var(--edsys-text);
    line-height: var(--edsys-lh-tight);
    letter-spacing: var(--edsys-tracking-tight);
    margin: 0 0 var(--space-lg);
    position: relative;
    z-index: 2;
}

.edsys-calculators-hero__description {
    font-size: var(--fs-lg);
    color: var(--edsys-text-muted);
    line-height: var(--edsys-lh-relaxed);
    max-width: 60rem;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

/* ========================================
   CALCULATORS GRID
   ======================================== */

.edsys-calculators-section {
    margin-bottom: var(--space-3xl);
    container-type: inline-size;
}

.edsys-calculators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(max(280px, 30%), 1fr));
    gap: clamp(1rem, 4cqi, 2rem);
    margin-bottom: var(--space-2xl);
    max-width: 120rem;
    margin-left: auto;
    margin-right: auto;
}

/* Container query для больших экранов */
@container (min-width: 768px) {
    .edsys-calculators-grid {
        grid-template-columns: repeat(auto-fit, minmax(min(350px, 100%), 1fr));
        gap: clamp(1.5rem, 3cqi, 2.5rem);
    }
}

/* Container query для очень больших экранов */
@container (min-width: 1200px) {
    .edsys-calculators-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

/* ========================================
   CALCULATOR CARDS
   ======================================== */

.edsys-calculator-card {
    background: var(--edsys-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--edsys-shadow);
    padding: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    transition: all var(--edsys-transition-medium) var(--edsys-ease);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
    min-height: 20rem;
}

.edsys-calculator-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg,
    var(--edsys-accent) 0%,
    var(--edsys-voltage) 50%,
    var(--edsys-circuit) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--edsys-transition-medium) var(--edsys-ease);
}

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

.edsys-calculator-card:hover {
    transform: translateZ(0) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--edsys-accent);
}

.edsys-calculator-card:focus-within {
    outline: 2px solid var(--edsys-accent);
    outline-offset: 2px;
}

/* Card Icon */
.edsys-calculator-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 6rem;
    height: 6rem;
    background: linear-gradient(135deg,
    var(--edsys-accent) 0%,
    var(--edsys-voltage) 100%);
    border-radius: 50%;
    margin: 0 auto;
    transition: all var(--edsys-transition-medium) var(--edsys-ease);
}

.edsys-calculator-card__icon i {
    font-size: 2.5rem;
    color: var(--edsys-white);
    transition: transform var(--edsys-transition-medium) var(--edsys-ease);
}

.edsys-calculator-card:hover .edsys-calculator-card__icon {
    transform: rotate(5deg) scale(1.1);
    box-shadow: 0 4px 20px rgba(255, 37, 69, 0.3);
}

.edsys-calculator-card:hover .edsys-calculator-card__icon i {
    transform: scale(1.1);
}

/* Card Content */
.edsys-calculator-card__content {
    flex: 1;
    text-align: center;
}

.edsys-calculator-card__title {
    font-size: var(--edsys-fs-h3);
    font-weight: var(--edsys-font-bold);
    color: var(--edsys-text);
    line-height: var(--edsys-lh-tight);
    margin: 0 0 var(--space-sm);
    transition: color var(--edsys-transition-medium) var(--edsys-ease);
}

.edsys-calculator-card:hover .edsys-calculator-card__title {
    color: var(--edsys-accent);
}

.edsys-calculator-card__description {
    font-size: var(--fs-sm);
    color: var(--edsys-text-muted);
    line-height: var(--edsys-lh-normal);
    margin: 0;
}

/* Card Action */
.edsys-calculator-card__action {
    margin: auto;
}

.edsys-calculator-card__button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--fs-sm);
    font-weight: var(--edsys-font-bold);
    color: var(--edsys-accent);
    text-decoration: none;
    padding: var(--space-sm) var(--space-md);
    border: 2px solid var(--edsys-accent);
    border-radius: var(--radius-md);
    background: transparent;
    transition: all var(--edsys-transition-medium) var(--edsys-ease);
}

.edsys-calculator-card__button i {
    font-size: 1.2rem;
    transition: transform var(--edsys-transition-medium) var(--edsys-ease);
}

.edsys-calculator-card:hover .edsys-calculator-card__button {
    background: var(--edsys-accent);
    color: var(--edsys-white);
    transform: translateX(4px);
}

.edsys-calculator-card:hover .edsys-calculator-card__button i {
    transform: translateX(4px);
}

/* ========================================
   INFO SECTION
   ======================================== */

.edsys-calculators-info {
    background: var(--edsys-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.edsys-calculators-info::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    right: -50%;
    bottom: -50%;
    background: radial-gradient(circle at center,
    rgba(255, 37, 69, 0.05) 0%,
    transparent 70%);
    animation: edsys-pulse 4s ease-in-out infinite;
}

@keyframes edsys-pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.1); opacity: 0.1; }
}

.edsys-calculators-info__content {
    position: relative;
    z-index: 2;
}

.edsys-calculators-info__title {
    font-size: var(--edsys-fs-h2);
    font-weight: var(--edsys-font-bold);
    color: var(--edsys-text);
    margin: 0 0 var(--space-lg);
    line-height: var(--edsys-lh-tight);
}

.edsys-calculators-info__text {
    font-size: var(--fs-lg);
    color: var(--edsys-text-muted);
    line-height: var(--edsys-lh-relaxed);
    max-width: 70rem;
    margin: 0 auto;
}

/* ========================================
   ACCESSIBILITY & INTERACTIONS
   ======================================== */

/* Focus states */
.edsys-calculator-card:focus {
    outline: 2px solid var(--edsys-accent);
    outline-offset: 2px;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    .edsys-calculator-card,
    .edsys-calculator-card::before,
    .edsys-calculator-card__icon,
    .edsys-calculator-card__icon i,
    .edsys-calculator-card__button,
    .edsys-calculator-card__button i {
        transition: none;
    }

    .edsys-calculators-info::before {
        animation: none;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .edsys-calculator-card {
        border: 2px solid var(--edsys-text);
    }

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

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

.edsys-calculator-card.edsys-loading {
    pointer-events: none;
    opacity: 0.7;
}

.edsys-calculator-card.edsys-loading .edsys-calculator-card__icon {
    animation: edsys-spin 1s linear infinite;
}

@keyframes edsys-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    .edsys-calculators-main {
        padding: 0;
    }

    .edsys-calculator-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--edsys-border);
    }

    .edsys-calculator-card__icon {
        background: var(--edsys-text) !important;
    }
}