// lms - utilities - variables
// ====================

// BASE
$baseline: 20px;

// ====================

// LAYOUT: grid
$gw-column: 80px;
$gw-gutter: 20px;
$fg-column: $gw-column;
$fg-gutter: $gw-gutter;
$fg-max-columns: 12;
$fg-max-width: 1400px;
$fg-min-width: 810px;

// ====================

// FONTS
$sans-serif: 'Open Sans', $verdana, sans-serif;
$monospace: Monaco, 'Bitstream Vera Sans Mono', 'Lucida Console', monospace;
$body-font-family: $sans-serif;
$serif: $georgia;

// FONT-WEIGHTS
$font-light: 300;
$font-regular: 400;
$font-semibold: 600;
$font-bold: 700;

// ====================

// MISC: base fonts/colors
$body-font-size: em(14);
$body-line-height: golden-ratio(.875em, 1);
$base-font-color: rgb(60,60,60);
$baseFontColor: rgb(60,60,60);
$base-font-color: rgb(60,60,60);
$lighter-base-font-color: rgb(100,100,100);
$very-light-text: rgb(255,255,255); // #ffffff

// ====================

// TIMING - used for animation/transition mixin syncing
$tmg-s3: 3.0s;
$tmg-s2: 2.0s;
$tmg-s1: 1.0s;
$tmg-avg: 0.75s;
$tmg-f1: 0.50s;
$tmg-f2: 0.25s;
$tmg-f3: 0.125s;

// ====================

// COLORS - utility
$transparent: rgba(0,0,0,0); // used when color value is needed for UI width/transitions but element is transparent

// COLORS
$black: rgb(0,0,0);  // #000000;
$black-t0: rgba($black, 0.125);
$black-t1: rgba($black, 0.25);
$black-t2: rgba($black, 0.5);
$black-t3: rgba($black, 0.75);

$white: rgb(255,255,255);  // #FFFFFF;
$white-t0: rgba($white, 0.125);
$white-t1: rgba($white, 0.25);
$white-t2: rgba($white, 0.5);
$white-t3: rgba($white, 0.75);

$gray: rgb(118,118,118);    // #767676 AA compliant
$gray-l1: tint($gray,20%);  // #989898
$gray-l2: tint($gray,40%);  // #b2b2b2
$gray-l3: tint($gray,60%);  // #cbcbcb
$gray-l4: tint($gray,80%);  // #e5e5e5
$gray-l5: tint($gray,90%);  // #f2f2f2
$gray-l6: tint($gray,95%);  // #f8f8f8
$gray-l7: tint($gray,99%);  // #fdfdfd
$gray-d1: shade($gray,20%); // #656565
$gray-d2: shade($gray,40%); // #4c4c4c
$gray-d3: shade($gray,60%); // #323232
$gray-d4: shade($gray,80%); // #191919


$pink: rgb(182,37,103); // #b72567;
$pink-l1: tint($pink,20%);
$pink-l2: tint($pink,40%);
$pink-l3: tint($pink,60%);
$pink-l4: tint($pink,80%);
$pink-l5: tint($pink,90%);
$pink-d1: shade($pink,20%);
$pink-d2: shade($pink,40%);
$pink-d3: shade($pink,60%);
$pink-d4: shade($pink,80%);
$pink-s1: saturate($pink,15%);
$pink-s2: saturate($pink,30%);
$pink-s3: saturate($pink,45%);
$pink-u1: desaturate($pink,15%);
$pink-u2: desaturate($pink,30%);
$pink-u3: desaturate($pink,45%);

$red: rgb(178, 6, 16); // #b20610;
$red-l1: tint($red,20%);
$red-l2: tint($red,40%);
$red-l3: tint($red,60%);
$red-l4: tint($red,80%);
$red-l5: tint($red,90%);
$red-d1: shade($red,20%);
$red-d2: shade($red,40%);
$red-d3: shade($red,60%);
$red-d4: shade($red,80%);
$red-s1: saturate($red,15%);
$red-s2: saturate($red,30%);
$red-s3: saturate($red,45%);
$red-u1: desaturate($red,15%);
$red-u2: desaturate($red,30%);
$red-u3: desaturate($red,45%);

$green: rgb(37, 184, 90); // #25b85a;
$green-l1: tint($green,20%);
$green-l2: tint($green,40%);
$green-l3: tint($green,60%);
$green-l4: tint($green,80%);
$green-l5: tint($green,90%);
$green-d1: shade($green,20%);
$green-d2: shade($green,40%);
$green-d3: shade($green,60%);
$green-d4: shade($green,80%);
$green-s1: saturate($green,15%);
$green-s2: saturate($green,30%);
$green-s3: saturate($green,45%);
$green-u1: desaturate($green,15%);
$green-u2: desaturate($green,30%);
$green-u3: desaturate($green,45%);

// ====================

// COLORS: social platforms
$twitter-blue: #55ACEE;
$facebook-blue: #3B5998;
$linkedin-blue: #0077B5;

// ====================

// TODO: both blue and yellow variables differ from CMS rgb value, need to confirm change to CMS variable is ok in current platform uses before switching.
$blue: rgb(0, 120, 176);
$yellow: rgb(255, 252, 221);

// ====================

// COLORS: old variables
// DEPRECATED: use colors in lists above 
$error-red: rgb(253, 87, 87);
$danger-red: rgb(212, 64, 64);
$light-gray: rgb(221, 221, 221);
$dark-gray: rgb(51, 51, 51);
$border-color: rgb(200, 200, 200);
$sidebar-color: rgb(246, 246, 246);
$outer-border-color: rgb(170, 170, 170);
$light-gray: rgb(221,221,221); // #dddddd

// ====================

// used by descriptor css
// DEPRECATED: use colors in lists above 
$lightGrey: rgb(237,241,245); // #edf1f5
$darkGrey: rgb(136,145,161); // #8891a1
$lightGrey1: $gray-l3;
$blue-d1: shade($blue,20%);
$blue-d2: shade($blue,40%);
$blue-d4: shade($blue,80%);

// ====================

// edx.org marketing site variables
$m-gray: rgb(138,140,143); // #8A8C8F
$m-gray-l1: rgb(151,153,155); // #97999B
$m-gray-l2: rgb(164,166,168); // #A4A6A8
$m-gray-l3: rgb(177,178,180); // #B1B2B4
$m-gray-l4: rgb(245,245,245); // #F5F5F5
$m-gray-d1: rgb(111, 112, 116); // #6f7074
$m-gray-d2: rgb(112,114,118); // #707276
$m-gray-d3: rgb(100,102,104); // #646668
$m-gray-d4: rgb(5,5,5); // #050505
$m-gray-t0: rgba($m-gray,0.125);
$m-gray-t1: rgba($m-gray,0.25);
$m-gray-t2: rgba($m-gray,0.50);
$m-gray-t3: rgba($m-gray,0.75);

$m-blue: rgb(26,161,222); // #1AA1DE
$m-blue-l1: rgb(43,172,230); // #2BACE6
$m-blue-l2: rgb(66,181,233); // #42B5E9
$m-blue-l3: rgb(89,190,236); // #59BEEC
$m-blue-l4: tint($m-blue,90%);
$m-blue-l5: tint($m-blue,95%);
$m-blue-l6: #4bb4fb;
$m-blue-d1: rgb(23,144,199); // #1790C7
$m-blue-d2: $blue;
$m-blue-d3: rgb(18,111,154); // #126F9A
$m-blue-d4: rgb(10,74,103); // #0A4A67
$m-blue-d5: rgb(0,158,231); // #009EE7
$m-blue-d6: #256A97;
$m-blue-t0: rgba($m-blue,0.125);
$m-blue-t1: rgba($m-blue,0.25);
$m-blue-t2: rgba($m-blue,0.50);
$m-blue-t3: rgba($m-blue,0.75);

$m-pink: rgb(181,42,103); // #B52A67
$m-pink-l1: rgb(202,47,115); //#CA2F73
$m-pink-l2: rgb(211,63,128); //#D33F80
$m-pink-l3: rgb(215,84,142); //#D7548E
$m-pink-l4: tint($m-pink,75%);
$m-pink-l5: tint($m-pink,85%);
$m-pink-d1: rgb(160,37,91); // #A0255B
$m-pink-d2: rgb(140,32,79); // #8C204F
$m-pink-d3: rgb(119,28,68); // #771C44

$m-green: rgb(0, 136, 1);
$m-green-s1: rgb(96, 188, 97);
$m-green-l1: tint($m-green,20%);
$m-green-l2: tint($m-green,40%);
$m-green-l3: tint($m-green,60%);
$m-green-l4: tint($m-green,90%);
$m-green-l5: tint($m-green,95%);
$m-green-d1: shade($m-green,20%);
$m-green-d2: shade($m-green,40%);
$m-green-d3: shade($m-green,60%);
$m-green-d4: shade($m-green,90%);
$m-green-t0: rgba($m-green,0.125);
$m-green-t1: rgba($m-green,0.25);
$m-green-t2: rgba($m-green,0.50);
$m-green-t3: rgba($m-green,0.75);

// ====================

// SHADOWS
$shadow: rgba(0,0,0,0.2);
$shadow-l1: rgba(0,0,0,0.1);
$shadow-l2: rgba(0,0,0,0.05);
$shadow-d1: rgba(0,0,0,0.4);
$shadow-d2: rgba($black, 0.6);

// ====================

$m-base-font-size: em(15);

$base-font-color: rgb(60,60,60);
$baseFontColor: rgb(60,60,60);
$lighter-base-font-color: rgb(100,100,100);
$text-color: $dark-gray;

$dark-trans-bg: rgba(0, 0, 0, .75);

$body-bg: rgb(250,250,250);
$container-bg: $white;
$header-image: linear-gradient(-90deg, rgba(255,255,255, 1), rgba(230,230,230, 0.9));
$header-bg: $white;
$courseware-header-image: linear-gradient(top, rgb(255,255,255), rgb(238,238,238));
$courseware-header-bg: transparent;
$footer-bg: $white;
$courseware-footer-border: none;
$courseware-footer-shadow: none;
$courseware-footer-margin: 0px;
$courseware-border-bottom-color: rgb(68,162,222); // #44a2de
$courseware-button-border-color: rgb(230,230,230); // #e6e6e6
$courseware-hover-color: rgb(51,52,53); // #333435
$courseware-navigation-color: $blue;

// ====================

// STATE: verified
$verified-color-lvl1: $m-green;
$verified-color-lvl2: $m-green-l1;
$verified-color-lvl3: $m-green-l2;
$verified-color-lvl4: $m-green-l3;
$verified-color-lvl5: $m-green-l4;

// STATE: professional ed
$professional-color-lvl1: $m-pink;
$professional-color-lvl2: $m-pink-l1;
$professional-color-lvl3: $m-pink-l2;
$professional-color-lvl4: $m-pink-l3;
$professional-color-lvl5: $m-pink-l4;

// STATE: honor code
$honorcode-color-lvl1: rgb(50, 165, 217);
$honorcode-color-lvl2: tint($honorcode-color-lvl1, 33%);

// STATE: audit
$audit-color-lvl1: $light-gray;
$audit-color-lvl2: tint($audit-color-lvl1, 33%);

// STATE: credit
$credit-color-base: rgb(244,195,0); // accessible with black text

// ====================

// ACTIONS: general
$button-bg-image: linear-gradient(rgb(255,255,255) 0%, rgb(250,250,250) 50%, rgb(237,237,237) 50%, rgb(220,220,220) 100%);
$button-bg-color: transparent;
$button-bg-hover-color: $white;

// ACTIONS: primary
$action-primary-bg: $m-blue-d3;
$action-primary-fg: $white;
$action-primary-shadow: $m-blue-d4;

// ACTIONS: primary - focused - hover/active pseudo states
$action-primary-focused-bg: $m-blue-d1;
$action-primary-focused-fg: $white;

// ACTIONS: primary - current or active navigation item
$action-primary-active-bg: $m-blue;
$action-primary-active-fg: $m-blue-d3;
$action-primary-active-shadow: $m-blue-d2;
$action-primary-active-focused-fg: $m-blue-d4;
$action-primary-active-focused-shadow: $m-blue-d3;

// ACTIONS: disabled
$action-primary-disabled-bg: $m-gray-d3;
$action-prmary-disabled-fg: $white;

// ACTIONS: secondary
$action-secondary-bg: $m-pink;
$action-secondary-fg: $white;
$action-secondary-shadow: $m-pink-d2;

// ACTIONS: secondary - focused - hover/active pseudo states
$action-secondary-focused-bg: $m-pink-l3;
$action-secondary-focused-fg: $white;

// ACTIONS: secondary - current or active navigation item
$action-secondary-active-bg: $m-pink-l2;
$action-secondary-active-fg: $m-pink-d1;
$action-secondary-active-shadow: $m-pink-d1;
$action-secondary-active-focused-fg: $m-pink-d3;
$action-secondary-active-focused-shadow: $m-pink-d2;

// ACTIONS: secondary - disabled
$action-secondary-disabled-bg: $m-gray-d3;
$action-secondary-disabled-fg: $white;

// HEADER: graphic-based page titles
$header-graphic-super-color: $m-blue-d1;
$header-graphic-sub-color: $m-gray-d2;

// State-based colors
$error-color: $error-red;
$warning-color: $m-pink;
$confirm-color: $m-green;
$active-color: $blue;
$highlight-color: rgb(255,255,0);

// Notifications
$notify-banner-bg-1: rgb(56,56,56);
$notify-banner-bg-2: rgb(136,136,136);
$notify-banner-bg-3: rgb(223,223,223);

$alert-color: rgb(212, 64, 64); //rich red
$warning-color: rgb(237, 189, 60); //rich yellow
$success-color: rgb(37, 184, 90); //rich green

// ====================

// MISC: visual horizontal rules
$faded-hr-image-1: linear-gradient(180deg, rgba(200,200,200, 0) 0%, rgba(200,200,200, 1) 50%, rgba(200,200,200, 0));
$faded-hr-image-2: linear-gradient(180deg, rgba(200,200,200, 0) 0%, rgba(200,200,200, 1));
$faded-hr-image-3: linear-gradient(180deg, rgba(200,200,200, 1) 0%, rgba(200,200,200, 0));
$faded-hr-image-4: linear-gradient(180deg, rgba(240,240,240, 0) 0%, rgba(240,240,240, 1) 50%, rgba(240,240,240, 0));
$faded-hr-image-5: linear-gradient(180deg, rgba(255,255,255, 0) 0%, rgba(255,255,255, 0.8) 50%, rgba(255,255,255, 0));
$faded-hr-image-6: linear-gradient(90deg, rgba(255,255,255, 0) 0%, rgba(255,255,255, 0.6) 50%, rgba(255,255,255, 0));

// MISC: dashboard
$dashboard-profile-header-image: linear-gradient(-90deg, rgb(255,255,255), rgb(245,245,245));
$dashboard-profile-header-color: transparent;
$dashboard-profile-color: rgb(252,252,252);
$dot-color: $light-gray;
$dashboard-course-cover-border: $light-gray;

// MISC: course assets
$content-wrapper-bg: $white;
$course-bg-color: #f2f2f2;
$course-bg-image: url(../images/bg-texture.png);
$account-content-wrapper-bg: shade($body-bg, 2%);
$course-profile-bg: rgb(245,245,245);
$course-header-bg: rgba(255,255,255, 0.93);

// MISC: course background texture
//$course-bg-image: url(../images/bg-texture.png);

// MISC: borders
$border-color-1: rgb(190,190,190);
$border-color-2: rgb(200,200,200);
$border-color-3: rgb(100,100,100);
$border-color-4: rgb(252,252,252);
$border-color-l1: $m-gray-l1;
$border-color-l2: $m-gray-l2;
$border-color-l3: $m-gray-l3;
$border-color-l4: $m-gray-l4;

// MISC: links and buttons
$link-color: $blue;
$link-color-d1: $blue;
$link-hover: $pink;
$site-status-color: $pink;
$button-color: $blue;
$button-archive-color: rgb(238,238,238); // #eeeeee

// MISC: shadow, form, modal
$shadow-color: $blue;
$form-bg-color: $white;
$modal-bg-color: rgb(245,245,245);

// MISC: sidebar
$sidebar-chapter-bg-top: rgba(255, 255, 255, .5);
$sidebar-chapter-bg-bottom: rgba(255, 255, 255, 0);
$sidebar-chapter-bg: rgb(246,246,246); // #f6f6f6
$sidebar-active-image: linear-gradient(top, rgb(230,230,230), rgb(214,214,214));

// TOP HEADER IMAGE MARGIN
$header_image_margin: -69px;

//FOOTER MARGIN
$footer_margin: ($baseline/4) 0 ($baseline*1.5) 0;

// ====================

// VIEWS: homepage
$homepage__header--gradient__color--alpha: lighten($gray, 15%);
$homepage__header--gradient__color--bravo: saturate($gray, 30%);
$homepage__header--background: lighten($gray, 15%);

// VIEWS: homepage and courses
$course-card-height: ($baseline*18);
$course-image-height: ($baseline*8);
$course-info-height: ($baseline*10);
$course-title-height: ($baseline*3.6);

// ====================

// IMAGES: backgrounds
$homepage-bg-image: none;

$login-banner-image: url(../images/edx-theme/edx-background-banner-account.png);
$register-banner-image: url(../images/edx-theme/edx-background-banner-account.png);
$passwordreset-banner-image: url(../images/edx-theme/edx-background-banner-account.png);

$video-thumb-url: '../images/homepage-hero-video-thumb.jpg';

// ====================

// SPLINT: new standards

// SPLINT: fonts
$f-serif: 'Bree Serif', Georgia, Cambria, 'Times New Roman', Times, serif;
$f-sans-serif: 'Open Sans','Helvetica Neue', Helvetica, Arial, sans-serif;
$f-monospace: 'Bitstream Vera Sans Mono', Consolas, Courier, monospace;

// Header specific sans-serif
$header-sans-serif: 'Open Sans', Arial, Helvetica, sans-serif;

// SPLINT: colors

$msg-bg: $action-primary-bg;


$dark-gray1: rgb(74,74,74); // #
$light-gray1: rgb(242,242,242); // #f2f2f2
$light-gray2: rgb(171,171,171); // #ababab
$light-gray3: rgb(249,249,249); // #f9f9f9
$dark-gray2: rgb(151,151,151); // #979797
$blue1: rgb(74,144,226); // #4A90E2
$blue2: rgb(0,161,229); // #00A1E5
$green1: rgb(97,161,46); // #61A12E
$red1: rgb(208,2,27); // #D0021B

// +case: search/result highlight
// --------------------
$result-highlight-color-base: rgba($highlight-color, 0.25);

// +feature: student notes
// --------------------
$student-notes-highlight-color-base: saturate($yellow, 65%);
$student-notes-highlight-color: tint($student-notes-highlight-color-base, 50%);
$student-notes-highlight-color-focus: $student-notes-highlight-color-base;
