/* =====================================================
   IGAS Payment App - Main Styles
   ===================================================== */

/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-dark);
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-light);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ===== TYPOGRAPHY ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

h4 {
    font-size: var(--font-size-lg);
}

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

.text-secondary {
    color: var(--text-secondary);
}

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

.text-success {
    color: var(--color-success);
}

.text-warning {
    color: var(--color-warning);
}

.text-danger {
    color: var(--color-danger);
}

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

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

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

.font-bold {
    font-weight: 700;
}

.font-semibold {
    font-weight: 600;
}

.font-medium {
    font-weight: 500;
}

/* ===== LAYOUT ===== */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.screen {
    display: none;
    flex-direction: column;
    min-height: 100vh;
    animation: fadeIn var(--transition-normal);
}

.screen.active {
    display: flex;
}

/* ===== HEADER ===== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    position: relative;
    z-index: var(--z-sticky);
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.header-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
}

/* ===== CONNECTION STATUS ===== */
.connection-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.connection-status.connected {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.connection-status.disconnected {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}

.connection-status.connecting {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: currentColor;
}

.status-dot.pulse {
    animation: pulse 2s infinite;
}

/* ===== ICON BUTTONS ===== */
.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.icon-btn:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
}

.icon-btn svg {
    width: 24px;
    height: 24px;
}

/* ===== UTILITY CLASSES ===== */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-1 {
    gap: var(--space-1);
}

.gap-2 {
    gap: var(--space-2);
}

.gap-3 {
    gap: var(--space-3);
}

.gap-4 {
    gap: var(--space-4);
}

.gap-6 {
    gap: var(--space-6);
}

.mt-2 {
    margin-top: var(--space-2);
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-6 {
    margin-top: var(--space-6);
}

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.p-2 {
    padding: var(--space-2);
}

.p-4 {
    padding: var(--space-4);
}

.p-6 {
    padding: var(--space-6);
}

.w-full {
    width: 100%;
}

.h-full {
    height: 100%;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}